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@@ -1,808 +1,910 b'' | |||
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1 | 1 | """Analysis of text input into executable blocks. |
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2 | 2 | |
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3 | 3 | The main class in this module, :class:`InputSplitter`, is designed to break |
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4 | 4 | input from either interactive, line-by-line environments or block-based ones, |
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5 | 5 | into standalone blocks that can be executed by Python as 'single' statements |
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6 | 6 | (thus triggering sys.displayhook). |
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7 | 7 | |
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8 | 8 | A companion, :class:`IPythonInputSplitter`, provides the same functionality but |
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9 | 9 | with full support for the extended IPython syntax (magics, system calls, etc). |
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10 | 10 | |
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11 | 11 | For more details, see the class docstring below. |
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12 | 12 | |
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13 | 13 | Syntax Transformations |
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14 | 14 | ---------------------- |
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15 | 15 | |
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16 | 16 | One of the main jobs of the code in this file is to apply all syntax |
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17 | 17 | transformations that make up 'the IPython language', i.e. magics, shell |
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18 | 18 | escapes, etc. All transformations should be implemented as *fully stateless* |
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19 | 19 | entities, that simply take one line as their input and return a line. |
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20 | 20 | Internally for implementation purposes they may be a normal function or a |
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21 | 21 | callable object, but the only input they receive will be a single line and they |
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22 | 22 | should only return a line, without holding any data-dependent state between |
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23 | 23 | calls. |
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24 | 24 | |
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25 | 25 | As an example, the EscapedTransformer is a class so we can more clearly group |
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26 | 26 | together the functionality of dispatching to individual functions based on the |
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27 | 27 | starting escape character, but the only method for public use is its call |
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28 | 28 | method. |
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29 | 29 | |
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30 | 30 | |
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31 | 31 | ToDo |
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32 | 32 | ---- |
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33 | 33 | |
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34 | 34 | - Should we make push() actually raise an exception once push_accepts_more() |
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35 | 35 | returns False? |
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36 | 36 | |
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37 | 37 | - Naming cleanups. The tr_* names aren't the most elegant, though now they are |
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38 | 38 | at least just attributes of a class so not really very exposed. |
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39 | 39 | |
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40 | 40 | - Think about the best way to support dynamic things: automagic, autocall, |
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41 | 41 | macros, etc. |
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42 | 42 | |
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43 | 43 | - Think of a better heuristic for the application of the transforms in |
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44 | 44 | IPythonInputSplitter.push() than looking at the buffer ending in ':'. Idea: |
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45 | 45 | track indentation change events (indent, dedent, nothing) and apply them only |
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46 | 46 | if the indentation went up, but not otherwise. |
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47 | 47 | |
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48 | 48 | - Think of the cleanest way for supporting user-specified transformations (the |
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49 | 49 | user prefilters we had before). |
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50 | 50 | |
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51 | 51 | Authors |
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52 | 52 | ------- |
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53 | 53 | |
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54 | 54 | * Fernando Perez |
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55 | 55 | * Brian Granger |
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56 | 56 | """ |
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57 | 57 | #----------------------------------------------------------------------------- |
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58 | 58 | # Copyright (C) 2010 The IPython Development Team |
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59 | 59 | # |
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60 | 60 | # Distributed under the terms of the BSD License. The full license is in |
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61 | 61 | # the file COPYING, distributed as part of this software. |
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62 | 62 | #----------------------------------------------------------------------------- |
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63 | 63 | from __future__ import print_function |
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64 | 64 | |
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65 | 65 | #----------------------------------------------------------------------------- |
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66 | 66 | # Imports |
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67 | 67 | #----------------------------------------------------------------------------- |
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68 | 68 | # stdlib |
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69 | 69 | import ast |
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70 | 70 | import codeop |
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71 | 71 | import re |
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72 | 72 | import sys |
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73 | 73 | import tokenize |
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74 | 74 | from StringIO import StringIO |
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75 | 75 | |
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76 | 76 | # IPython modules |
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77 | 77 | from IPython.core.splitinput import split_user_input, LineInfo |
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78 | 78 | from IPython.utils.py3compat import cast_unicode |
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79 | 79 | |
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80 | 80 | #----------------------------------------------------------------------------- |
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81 | 81 | # Globals |
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82 | 82 | #----------------------------------------------------------------------------- |
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83 | 83 | |
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84 | 84 | # The escape sequences that define the syntax transformations IPython will |
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85 | 85 | # apply to user input. These can NOT be just changed here: many regular |
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86 | 86 | # expressions and other parts of the code may use their hardcoded values, and |
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87 | 87 | # for all intents and purposes they constitute the 'IPython syntax', so they |
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88 | 88 | # should be considered fixed. |
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89 | 89 | |
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90 | 90 | ESC_SHELL = '!' # Send line to underlying system shell |
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91 | 91 | ESC_SH_CAP = '!!' # Send line to system shell and capture output |
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92 | 92 | ESC_HELP = '?' # Find information about object |
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93 | 93 | ESC_HELP2 = '??' # Find extra-detailed information about object |
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94 | 94 | ESC_MAGIC = '%' # Call magic function |
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95 | 95 | ESC_QUOTE = ',' # Split args on whitespace, quote each as string and call |
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96 | 96 | ESC_QUOTE2 = ';' # Quote all args as a single string, call |
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97 | 97 | ESC_PAREN = '/' # Call first argument with rest of line as arguments |
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98 | 98 | |
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99 | 99 | #----------------------------------------------------------------------------- |
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100 | 100 | # Utilities |
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101 | 101 | #----------------------------------------------------------------------------- |
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102 | 102 | |
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103 | 103 | # FIXME: These are general-purpose utilities that later can be moved to the |
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104 | 104 | # general ward. Kept here for now because we're being very strict about test |
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105 | 105 | # coverage with this code, and this lets us ensure that we keep 100% coverage |
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106 | 106 | # while developing. |
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107 | 107 | |
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108 | 108 | # compiled regexps for autoindent management |
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109 | 109 | dedent_re = re.compile('|'.join([ |
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110 | 110 | r'^\s+raise(\s.*)?$', # raise statement (+ space + other stuff, maybe) |
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111 | 111 | r'^\s+raise\([^\)]*\).*$', # wacky raise with immediate open paren |
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112 | 112 | r'^\s+return(\s.*)?$', # normal return (+ space + other stuff, maybe) |
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113 | 113 | r'^\s+return\([^\)]*\).*$', # wacky return with immediate open paren |
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114 | 114 | r'^\s+pass\s*$' # pass (optionally followed by trailing spaces) |
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115 | 115 | ])) |
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116 | 116 | ini_spaces_re = re.compile(r'^([ \t\r\f\v]+)') |
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117 | 117 | |
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118 | 118 | # regexp to match pure comment lines so we don't accidentally insert 'if 1:' |
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119 | 119 | # before pure comments |
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120 | 120 | comment_line_re = re.compile('^\s*\#') |
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121 | 121 | |
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122 | 122 | |
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123 | 123 | def num_ini_spaces(s): |
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124 | 124 | """Return the number of initial spaces in a string. |
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125 | 125 | |
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126 | 126 | Note that tabs are counted as a single space. For now, we do *not* support |
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127 | 127 | mixing of tabs and spaces in the user's input. |
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128 | 128 | |
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129 | 129 | Parameters |
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130 | 130 | ---------- |
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131 | 131 | s : string |
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132 | 132 | |
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133 | 133 | Returns |
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134 | 134 | ------- |
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135 | 135 | n : int |
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136 | 136 | """ |
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137 | 137 | |
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138 | 138 | ini_spaces = ini_spaces_re.match(s) |
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139 | 139 | if ini_spaces: |
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140 | 140 | return ini_spaces.end() |
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141 | 141 | else: |
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142 | 142 | return 0 |
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143 | 143 | |
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144 | 144 | |
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145 | def last_blank(src): | |
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146 | """Determine if the input source ends in a blank. | |
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147 | ||
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148 | A blank is either a newline or a line consisting of whitespace. | |
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149 | ||
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150 | Parameters | |
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151 | ---------- | |
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152 | src : string | |
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153 | A single or multiline string. | |
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154 | """ | |
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155 | if not src: return False | |
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156 | ll = src.splitlines()[-1] | |
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157 | return (ll == '') or ll.isspace() | |
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158 | ||
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159 | ||
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145 | 160 | def remove_comments(src): |
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146 | 161 | """Remove all comments from input source. |
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147 | 162 | |
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148 | 163 | Note: comments are NOT recognized inside of strings! |
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149 | 164 | |
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150 | 165 | Parameters |
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151 | 166 | ---------- |
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152 | 167 | src : string |
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153 | 168 | A single or multiline input string. |
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154 | 169 | |
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155 | 170 | Returns |
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156 | 171 | ------- |
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157 | 172 | String with all Python comments removed. |
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158 | 173 | """ |
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159 | 174 | |
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160 | 175 | return re.sub('#.*', '', src) |
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161 | 176 | |
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162 | 177 | def has_comment(src): |
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163 | 178 | """Indicate whether an input line has (i.e. ends in, or is) a comment. |
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164 | 179 | |
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165 | 180 | This uses tokenize, so it can distinguish comments from # inside strings. |
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166 | 181 | |
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167 | 182 | Parameters |
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168 | 183 | ---------- |
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169 | 184 | src : string |
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170 | 185 | A single line input string. |
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171 | 186 | |
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172 | 187 | Returns |
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173 | 188 | ------- |
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174 | 189 | Boolean: True if source has a comment. |
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175 | 190 | """ |
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176 | 191 | readline = StringIO(src).readline |
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177 | 192 | toktypes = set() |
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178 | 193 | try: |
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179 | 194 | for t in tokenize.generate_tokens(readline): |
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180 | 195 | toktypes.add(t[0]) |
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181 | 196 | except tokenize.TokenError: |
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182 | 197 | pass |
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183 | 198 | return(tokenize.COMMENT in toktypes) |
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184 | 199 | |
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185 | 200 | |
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186 | 201 | def get_input_encoding(): |
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187 | 202 | """Return the default standard input encoding. |
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188 | 203 | |
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189 | 204 | If sys.stdin has no encoding, 'ascii' is returned.""" |
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190 | 205 | # There are strange environments for which sys.stdin.encoding is None. We |
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191 | 206 | # ensure that a valid encoding is returned. |
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192 | 207 | encoding = getattr(sys.stdin, 'encoding', None) |
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193 | 208 | if encoding is None: |
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194 | 209 | encoding = 'ascii' |
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195 | 210 | return encoding |
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196 | 211 | |
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197 | 212 | #----------------------------------------------------------------------------- |
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198 | 213 | # Classes and functions for normal Python syntax handling |
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199 | 214 | #----------------------------------------------------------------------------- |
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200 | 215 | |
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201 | 216 | class InputSplitter(object): |
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202 | 217 | """An object that can accumulate lines of Python source before execution. |
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203 | 218 | |
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204 | 219 | This object is designed to be fed python source line-by-line, using |
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205 | 220 | :meth:`push`. It will return on each push whether the currently pushed |
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206 | 221 | code could be executed already. In addition, it provides a method called |
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207 | 222 | :meth:`push_accepts_more` that can be used to query whether more input |
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208 | 223 | can be pushed into a single interactive block. |
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209 | 224 | |
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210 | 225 | This is a simple example of how an interactive terminal-based client can use |
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211 | 226 | this tool:: |
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212 | 227 | |
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213 | 228 | isp = InputSplitter() |
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214 | 229 | while isp.push_accepts_more(): |
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215 | 230 | indent = ' '*isp.indent_spaces |
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216 | 231 | prompt = '>>> ' + indent |
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217 | 232 | line = indent + raw_input(prompt) |
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218 | 233 | isp.push(line) |
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219 | 234 | print 'Input source was:\n', isp.source_reset(), |
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220 | 235 | """ |
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221 | 236 | # Number of spaces of indentation computed from input that has been pushed |
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222 | 237 | # so far. This is the attributes callers should query to get the current |
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223 | 238 | # indentation level, in order to provide auto-indent facilities. |
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224 | 239 | indent_spaces = 0 |
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225 | 240 | # String, indicating the default input encoding. It is computed by default |
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226 | 241 | # at initialization time via get_input_encoding(), but it can be reset by a |
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227 | 242 | # client with specific knowledge of the encoding. |
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228 | 243 | encoding = '' |
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229 | 244 | # String where the current full source input is stored, properly encoded. |
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230 | 245 | # Reading this attribute is the normal way of querying the currently pushed |
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231 | 246 | # source code, that has been properly encoded. |
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232 | 247 | source = '' |
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233 | 248 | # Code object corresponding to the current source. It is automatically |
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234 | 249 | # synced to the source, so it can be queried at any time to obtain the code |
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235 | 250 | # object; it will be None if the source doesn't compile to valid Python. |
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236 | 251 | code = None |
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237 | 252 | # Input mode |
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238 | 253 | input_mode = 'line' |
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239 | 254 | |
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240 | 255 | # Private attributes |
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241 | 256 | |
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242 | 257 | # List with lines of input accumulated so far |
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243 | 258 | _buffer = None |
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244 | 259 | # Command compiler |
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245 | 260 | _compile = None |
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246 | 261 | # Mark when input has changed indentation all the way back to flush-left |
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247 | 262 | _full_dedent = False |
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248 | 263 | # Boolean indicating whether the current block is complete |
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249 | 264 | _is_complete = None |
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250 | 265 | |
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251 | 266 | def __init__(self, input_mode=None): |
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252 | 267 | """Create a new InputSplitter instance. |
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253 | 268 | |
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254 | 269 | Parameters |
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255 | 270 | ---------- |
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256 | 271 | input_mode : str |
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257 | 272 | |
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258 | 273 | One of ['line', 'cell']; default is 'line'. |
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259 | 274 | |
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260 | 275 | The input_mode parameter controls how new inputs are used when fed via |
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261 | 276 | the :meth:`push` method: |
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262 | 277 | |
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263 | 278 | - 'line': meant for line-oriented clients, inputs are appended one at a |
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264 | 279 | time to the internal buffer and the whole buffer is compiled. |
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265 | 280 | |
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266 | 281 | - 'cell': meant for clients that can edit multi-line 'cells' of text at |
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267 | 282 | a time. A cell can contain one or more blocks that can be compile in |
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268 | 283 | 'single' mode by Python. In this mode, each new input new input |
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269 | 284 | completely replaces all prior inputs. Cell mode is thus equivalent |
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270 | 285 | to prepending a full reset() to every push() call. |
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271 | 286 | """ |
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272 | 287 | self._buffer = [] |
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273 | 288 | self._compile = codeop.CommandCompiler() |
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274 | 289 | self.encoding = get_input_encoding() |
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275 | 290 | self.input_mode = InputSplitter.input_mode if input_mode is None \ |
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276 | 291 | else input_mode |
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277 | 292 | |
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278 | 293 | def reset(self): |
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279 | 294 | """Reset the input buffer and associated state.""" |
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280 | 295 | self.indent_spaces = 0 |
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281 | 296 | self._buffer[:] = [] |
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282 | 297 | self.source = '' |
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283 | 298 | self.code = None |
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284 | 299 | self._is_complete = False |
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285 | 300 | self._full_dedent = False |
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286 | 301 | |
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287 | 302 | def source_reset(self): |
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288 | 303 | """Return the input source and perform a full reset. |
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289 | 304 | """ |
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290 | 305 | out = self.source |
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291 | 306 | self.reset() |
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292 | 307 | return out |
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293 | 308 | |
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294 | 309 | def push(self, lines): |
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295 | 310 | """Push one or more lines of input. |
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296 | 311 | |
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297 | 312 | This stores the given lines and returns a status code indicating |
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298 | 313 | whether the code forms a complete Python block or not. |
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299 | 314 | |
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300 | 315 | Any exceptions generated in compilation are swallowed, but if an |
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301 | 316 | exception was produced, the method returns True. |
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302 | 317 | |
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303 | 318 | Parameters |
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304 | 319 | ---------- |
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305 | 320 | lines : string |
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306 | 321 | One or more lines of Python input. |
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307 | 322 | |
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308 | 323 | Returns |
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309 | 324 | ------- |
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310 | 325 | is_complete : boolean |
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311 | 326 | True if the current input source (the result of the current input |
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312 | 327 | plus prior inputs) forms a complete Python execution block. Note that |
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313 | 328 | this value is also stored as a private attribute (_is_complete), so it |
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314 | 329 | can be queried at any time. |
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315 | 330 | """ |
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316 | 331 | if self.input_mode == 'cell': |
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317 | 332 | self.reset() |
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318 | 333 | |
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319 | 334 | self._store(lines) |
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320 | 335 | source = self.source |
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321 | 336 | |
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322 | 337 | # Before calling _compile(), reset the code object to None so that if an |
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323 | 338 | # exception is raised in compilation, we don't mislead by having |
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324 | 339 | # inconsistent code/source attributes. |
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325 | 340 | self.code, self._is_complete = None, None |
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326 | 341 | |
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327 | 342 | # Honor termination lines properly |
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328 | 343 | if source.rstrip().endswith('\\'): |
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329 | 344 | return False |
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330 | 345 | |
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331 | 346 | self._update_indent(lines) |
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332 | 347 | try: |
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333 | 348 | self.code = self._compile(source, symbol="exec") |
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334 | 349 | # Invalid syntax can produce any of a number of different errors from |
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335 | 350 | # inside the compiler, so we have to catch them all. Syntax errors |
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336 | 351 | # immediately produce a 'ready' block, so the invalid Python can be |
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337 | 352 | # sent to the kernel for evaluation with possible ipython |
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338 | 353 | # special-syntax conversion. |
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339 | 354 | except (SyntaxError, OverflowError, ValueError, TypeError, |
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340 | 355 | MemoryError): |
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341 | 356 | self._is_complete = True |
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342 | 357 | else: |
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343 | 358 | # Compilation didn't produce any exceptions (though it may not have |
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344 | 359 | # given a complete code object) |
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345 | 360 | self._is_complete = self.code is not None |
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346 | 361 | |
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347 | 362 | return self._is_complete |
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348 | 363 | |
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349 | 364 | def push_accepts_more(self): |
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350 | 365 | """Return whether a block of interactive input can accept more input. |
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351 | 366 | |
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352 | 367 | This method is meant to be used by line-oriented frontends, who need to |
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353 | 368 | guess whether a block is complete or not based solely on prior and |
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354 | 369 | current input lines. The InputSplitter considers it has a complete |
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355 | 370 | interactive block and will not accept more input only when either a |
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356 | 371 | SyntaxError is raised, or *all* of the following are true: |
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357 | 372 | |
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358 | 373 | 1. The input compiles to a complete statement. |
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359 | 374 | |
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360 | 375 | 2. The indentation level is flush-left (because if we are indented, |
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361 | 376 | like inside a function definition or for loop, we need to keep |
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362 | 377 | reading new input). |
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363 | 378 | |
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364 | 379 | 3. There is one extra line consisting only of whitespace. |
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365 | 380 | |
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366 | 381 | Because of condition #3, this method should be used only by |
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367 | 382 | *line-oriented* frontends, since it means that intermediate blank lines |
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368 | 383 | are not allowed in function definitions (or any other indented block). |
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369 | 384 | |
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370 | 385 | If the current input produces a syntax error, this method immediately |
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371 | 386 | returns False but does *not* raise the syntax error exception, as |
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372 | 387 | typically clients will want to send invalid syntax to an execution |
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373 | 388 | backend which might convert the invalid syntax into valid Python via |
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374 | 389 | one of the dynamic IPython mechanisms. |
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375 | 390 | """ |
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376 | 391 | |
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377 | 392 | # With incomplete input, unconditionally accept more |
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378 | 393 | if not self._is_complete: |
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379 | 394 | return True |
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380 | 395 | |
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381 | 396 | # If we already have complete input and we're flush left, the answer |
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382 | 397 | # depends. In line mode, if there hasn't been any indentation, |
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383 | 398 | # that's it. If we've come back from some indentation, we need |
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384 | 399 | # the blank final line to finish. |
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385 | 400 | # In cell mode, we need to check how many blocks the input so far |
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386 | 401 | # compiles into, because if there's already more than one full |
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387 | 402 | # independent block of input, then the client has entered full |
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388 | 403 | # 'cell' mode and is feeding lines that each is complete. In this |
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389 | 404 | # case we should then keep accepting. The Qt terminal-like console |
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390 | 405 | # does precisely this, to provide the convenience of terminal-like |
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391 | 406 | # input of single expressions, but allowing the user (with a |
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392 | 407 | # separate keystroke) to switch to 'cell' mode and type multiple |
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393 | 408 | # expressions in one shot. |
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394 | 409 | if self.indent_spaces==0: |
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395 | 410 | if self.input_mode=='line': |
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396 | 411 | if not self._full_dedent: |
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397 | 412 | return False |
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398 | 413 | else: |
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399 | 414 | try: |
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400 | 415 | code_ast = ast.parse(u''.join(self._buffer)) |
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401 | 416 | except Exception: |
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402 | 417 | return False |
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403 | 418 | else: |
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404 | 419 | if len(code_ast.body) == 1: |
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405 | 420 | return False |
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406 | 421 | |
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407 | 422 | # When input is complete, then termination is marked by an extra blank |
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408 | 423 | # line at the end. |
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409 | 424 | last_line = self.source.splitlines()[-1] |
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410 | 425 | return bool(last_line and not last_line.isspace()) |
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411 | 426 | |
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412 | 427 | #------------------------------------------------------------------------ |
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413 | 428 | # Private interface |
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414 | 429 | #------------------------------------------------------------------------ |
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415 | 430 | |
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416 | 431 | def _find_indent(self, line): |
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417 | 432 | """Compute the new indentation level for a single line. |
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418 | 433 | |
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419 | 434 | Parameters |
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420 | 435 | ---------- |
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421 | 436 | line : str |
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422 | 437 | A single new line of non-whitespace, non-comment Python input. |
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423 | 438 | |
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424 | 439 | Returns |
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425 | 440 | ------- |
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426 | 441 | indent_spaces : int |
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427 | 442 | New value for the indent level (it may be equal to self.indent_spaces |
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428 | 443 | if indentation doesn't change. |
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429 | 444 | |
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430 | 445 | full_dedent : boolean |
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431 | 446 | Whether the new line causes a full flush-left dedent. |
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432 | 447 | """ |
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433 | 448 | indent_spaces = self.indent_spaces |
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434 | 449 | full_dedent = self._full_dedent |
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435 | 450 | |
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436 | 451 | inisp = num_ini_spaces(line) |
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437 | 452 | if inisp < indent_spaces: |
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438 | 453 | indent_spaces = inisp |
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439 | 454 | if indent_spaces <= 0: |
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440 | 455 | #print 'Full dedent in text',self.source # dbg |
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441 | 456 | full_dedent = True |
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442 | 457 | |
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443 | 458 | if line.rstrip()[-1] == ':': |
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444 | 459 | indent_spaces += 4 |
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445 | 460 | elif dedent_re.match(line): |
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446 | 461 | indent_spaces -= 4 |
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447 | 462 | if indent_spaces <= 0: |
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448 | 463 | full_dedent = True |
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449 | 464 | |
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450 | 465 | # Safety |
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451 | 466 | if indent_spaces < 0: |
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452 | 467 | indent_spaces = 0 |
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453 | 468 | #print 'safety' # dbg |
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454 | 469 | |
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455 | 470 | return indent_spaces, full_dedent |
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456 | 471 | |
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457 | 472 | def _update_indent(self, lines): |
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458 | 473 | for line in remove_comments(lines).splitlines(): |
|
459 | 474 | if line and not line.isspace(): |
|
460 | 475 | self.indent_spaces, self._full_dedent = self._find_indent(line) |
|
461 | 476 | |
|
462 | 477 | def _store(self, lines, buffer=None, store='source'): |
|
463 | 478 | """Store one or more lines of input. |
|
464 | 479 | |
|
465 | 480 | If input lines are not newline-terminated, a newline is automatically |
|
466 | 481 | appended.""" |
|
467 | 482 | |
|
468 | 483 | if buffer is None: |
|
469 | 484 | buffer = self._buffer |
|
470 | 485 | |
|
471 | 486 | if lines.endswith('\n'): |
|
472 | 487 | buffer.append(lines) |
|
473 | 488 | else: |
|
474 | 489 | buffer.append(lines+'\n') |
|
475 | 490 | setattr(self, store, self._set_source(buffer)) |
|
476 | 491 | |
|
477 | 492 | def _set_source(self, buffer): |
|
478 | 493 | return u''.join(buffer) |
|
479 | 494 | |
|
480 | 495 | |
|
481 | 496 | #----------------------------------------------------------------------------- |
|
482 | 497 | # Functions and classes for IPython-specific syntactic support |
|
483 | 498 | #----------------------------------------------------------------------------- |
|
484 | 499 | |
|
485 | 500 | # The escaped translators ALL receive a line where their own escape has been |
|
486 | 501 | # stripped. Only '?' is valid at the end of the line, all others can only be |
|
487 | 502 | # placed at the start. |
|
488 | 503 | |
|
489 | 504 | # Transformations of the special syntaxes that don't rely on an explicit escape |
|
490 | 505 | # character but instead on patterns on the input line |
|
491 | 506 | |
|
492 | 507 | # The core transformations are implemented as standalone functions that can be |
|
493 | 508 | # tested and validated in isolation. Each of these uses a regexp, we |
|
494 | 509 | # pre-compile these and keep them close to each function definition for clarity |
|
495 | 510 | |
|
496 | 511 | _assign_system_re = re.compile(r'(?P<lhs>(\s*)([\w\.]+)((\s*,\s*[\w\.]+)*))' |
|
497 | 512 | r'\s*=\s*!\s*(?P<cmd>.*)') |
|
498 | 513 | |
|
499 | 514 | def transform_assign_system(line): |
|
500 | 515 | """Handle the `files = !ls` syntax.""" |
|
501 | 516 | m = _assign_system_re.match(line) |
|
502 | 517 | if m is not None: |
|
503 | 518 | cmd = m.group('cmd') |
|
504 | 519 | lhs = m.group('lhs') |
|
505 | 520 | new_line = '%s = get_ipython().getoutput(%r)' % (lhs, cmd) |
|
506 | 521 | return new_line |
|
507 | 522 | return line |
|
508 | 523 | |
|
509 | 524 | |
|
510 | 525 | _assign_magic_re = re.compile(r'(?P<lhs>(\s*)([\w\.]+)((\s*,\s*[\w\.]+)*))' |
|
511 | 526 | r'\s*=\s*%\s*(?P<cmd>.*)') |
|
512 | 527 | |
|
513 | 528 | def transform_assign_magic(line): |
|
514 | 529 | """Handle the `a = %who` syntax.""" |
|
515 | 530 | m = _assign_magic_re.match(line) |
|
516 | 531 | if m is not None: |
|
517 | 532 | cmd = m.group('cmd') |
|
518 | 533 | lhs = m.group('lhs') |
|
519 | 534 | new_line = '%s = get_ipython().magic(%r)' % (lhs, cmd) |
|
520 | 535 | return new_line |
|
521 | 536 | return line |
|
522 | 537 | |
|
523 | 538 | |
|
524 | 539 | _classic_prompt_re = re.compile(r'^([ \t]*>>> |^[ \t]*\.\.\. )') |
|
525 | 540 | |
|
526 | 541 | def transform_classic_prompt(line): |
|
527 | 542 | """Handle inputs that start with '>>> ' syntax.""" |
|
528 | 543 | |
|
529 | 544 | if not line or line.isspace(): |
|
530 | 545 | return line |
|
531 | 546 | m = _classic_prompt_re.match(line) |
|
532 | 547 | if m: |
|
533 | 548 | return line[len(m.group(0)):] |
|
534 | 549 | else: |
|
535 | 550 | return line |
|
536 | 551 | |
|
537 | 552 | |
|
538 | 553 | _ipy_prompt_re = re.compile(r'^([ \t]*In \[\d+\]: |^[ \t]*\ \ \ \.\.\.+: )') |
|
539 | 554 | |
|
540 | 555 | def transform_ipy_prompt(line): |
|
541 | 556 | """Handle inputs that start classic IPython prompt syntax.""" |
|
542 | 557 | |
|
543 | 558 | if not line or line.isspace(): |
|
544 | 559 | return line |
|
545 | 560 | #print 'LINE: %r' % line # dbg |
|
546 | 561 | m = _ipy_prompt_re.match(line) |
|
547 | 562 | if m: |
|
548 | 563 | #print 'MATCH! %r -> %r' % (line, line[len(m.group(0)):]) # dbg |
|
549 | 564 | return line[len(m.group(0)):] |
|
550 | 565 | else: |
|
551 | 566 | return line |
|
552 | 567 | |
|
553 | 568 | |
|
554 | 569 | def _make_help_call(target, esc, lspace, next_input=None): |
|
555 | 570 | """Prepares a pinfo(2)/psearch call from a target name and the escape |
|
556 | 571 | (i.e. ? or ??)""" |
|
557 | 572 | method = 'pinfo2' if esc == '??' \ |
|
558 | 573 | else 'psearch' if '*' in target \ |
|
559 | 574 | else 'pinfo' |
|
560 | 575 | arg = " ".join([method, target]) |
|
561 | 576 | |
|
562 | 577 | if next_input is None: |
|
563 | 578 | return '%sget_ipython().magic(%r)' % (lspace, arg) |
|
564 | 579 | else: |
|
565 | 580 | return '%sget_ipython().set_next_input(%r);get_ipython().magic(%r)' % \ |
|
566 | 581 | (lspace, next_input, arg) |
|
567 | 582 | |
|
568 | 583 | |
|
569 | 584 | _initial_space_re = re.compile(r'\s*') |
|
570 | 585 | |
|
571 | 586 | _help_end_re = re.compile(r"""(%? |
|
572 | 587 | [a-zA-Z_*][\w*]* # Variable name |
|
573 | 588 | (\.[a-zA-Z_*][\w*]*)* # .etc.etc |
|
574 | 589 | ) |
|
575 | 590 | (\?\??)$ # ? or ??""", |
|
576 | 591 | re.VERBOSE) |
|
577 | 592 | |
|
578 | 593 | |
|
579 | 594 | def transform_help_end(line): |
|
580 | 595 | """Translate lines with ?/?? at the end""" |
|
581 | 596 | m = _help_end_re.search(line) |
|
582 | 597 | if m is None or has_comment(line): |
|
583 | 598 | return line |
|
584 | 599 | target = m.group(1) |
|
585 | 600 | esc = m.group(3) |
|
586 | 601 | lspace = _initial_space_re.match(line).group(0) |
|
587 | 602 | |
|
588 | 603 | # If we're mid-command, put it back on the next prompt for the user. |
|
589 | 604 | next_input = line.rstrip('?') if line.strip() != m.group(0) else None |
|
590 | 605 | |
|
591 | 606 | return _make_help_call(target, esc, lspace, next_input) |
|
592 | 607 | |
|
593 | 608 | |
|
594 | 609 | class EscapedTransformer(object): |
|
595 | 610 | """Class to transform lines that are explicitly escaped out.""" |
|
596 | 611 | |
|
597 | 612 | def __init__(self): |
|
598 | 613 | tr = { ESC_SHELL : self._tr_system, |
|
599 | 614 | ESC_SH_CAP : self._tr_system2, |
|
600 | 615 | ESC_HELP : self._tr_help, |
|
601 | 616 | ESC_HELP2 : self._tr_help, |
|
602 | 617 | ESC_MAGIC : self._tr_magic, |
|
603 | 618 | ESC_QUOTE : self._tr_quote, |
|
604 | 619 | ESC_QUOTE2 : self._tr_quote2, |
|
605 | 620 | ESC_PAREN : self._tr_paren } |
|
606 | 621 | self.tr = tr |
|
607 | 622 | |
|
608 | 623 | # Support for syntax transformations that use explicit escapes typed by the |
|
609 | 624 | # user at the beginning of a line |
|
610 | 625 | @staticmethod |
|
611 | 626 | def _tr_system(line_info): |
|
612 | 627 | "Translate lines escaped with: !" |
|
613 | 628 | cmd = line_info.line.lstrip().lstrip(ESC_SHELL) |
|
614 | 629 | return '%sget_ipython().system(%r)' % (line_info.pre, cmd) |
|
615 | 630 | |
|
616 | 631 | @staticmethod |
|
617 | 632 | def _tr_system2(line_info): |
|
618 | 633 | "Translate lines escaped with: !!" |
|
619 | 634 | cmd = line_info.line.lstrip()[2:] |
|
620 | 635 | return '%sget_ipython().getoutput(%r)' % (line_info.pre, cmd) |
|
621 | 636 | |
|
622 | 637 | @staticmethod |
|
623 | 638 | def _tr_help(line_info): |
|
624 | 639 | "Translate lines escaped with: ?/??" |
|
625 | 640 | # A naked help line should just fire the intro help screen |
|
626 | 641 | if not line_info.line[1:]: |
|
627 | 642 | return 'get_ipython().show_usage()' |
|
628 | 643 | |
|
629 | 644 | return _make_help_call(line_info.ifun, line_info.esc, line_info.pre) |
|
630 | 645 | |
|
631 | 646 | @staticmethod |
|
632 | 647 | def _tr_magic(line_info): |
|
633 | 648 | "Translate lines escaped with: %" |
|
634 | 649 | tpl = '%sget_ipython().magic(%r)' |
|
635 | 650 | cmd = ' '.join([line_info.ifun, line_info.the_rest]).strip() |
|
636 | 651 | return tpl % (line_info.pre, cmd) |
|
637 | 652 | |
|
638 | 653 | @staticmethod |
|
639 | 654 | def _tr_quote(line_info): |
|
640 | 655 | "Translate lines escaped with: ," |
|
641 | 656 | return '%s%s("%s")' % (line_info.pre, line_info.ifun, |
|
642 | 657 | '", "'.join(line_info.the_rest.split()) ) |
|
643 | 658 | |
|
644 | 659 | @staticmethod |
|
645 | 660 | def _tr_quote2(line_info): |
|
646 | 661 | "Translate lines escaped with: ;" |
|
647 | 662 | return '%s%s("%s")' % (line_info.pre, line_info.ifun, |
|
648 | 663 | line_info.the_rest) |
|
649 | 664 | |
|
650 | 665 | @staticmethod |
|
651 | 666 | def _tr_paren(line_info): |
|
652 | 667 | "Translate lines escaped with: /" |
|
653 | 668 | return '%s%s(%s)' % (line_info.pre, line_info.ifun, |
|
654 | 669 | ", ".join(line_info.the_rest.split())) |
|
655 | 670 | |
|
656 | 671 | def __call__(self, line): |
|
657 | 672 | """Class to transform lines that are explicitly escaped out. |
|
658 | 673 | |
|
659 | 674 | This calls the above _tr_* static methods for the actual line |
|
660 | 675 | translations.""" |
|
661 | 676 | |
|
662 | 677 | # Empty lines just get returned unmodified |
|
663 | 678 | if not line or line.isspace(): |
|
664 | 679 | return line |
|
665 | 680 | |
|
666 | 681 | # Get line endpoints, where the escapes can be |
|
667 | 682 | line_info = LineInfo(line) |
|
668 | 683 | |
|
669 | 684 | if not line_info.esc in self.tr: |
|
670 | 685 | # If we don't recognize the escape, don't modify the line |
|
671 | 686 | return line |
|
672 | 687 | |
|
673 | 688 | return self.tr[line_info.esc](line_info) |
|
674 | 689 | |
|
675 | 690 | |
|
676 | 691 | # A function-looking object to be used by the rest of the code. The purpose of |
|
677 | 692 | # the class in this case is to organize related functionality, more than to |
|
678 | 693 | # manage state. |
|
679 | 694 | transform_escaped = EscapedTransformer() |
|
680 | 695 | |
|
681 | 696 | |
|
682 | 697 | class IPythonInputSplitter(InputSplitter): |
|
683 | 698 | """An input splitter that recognizes all of IPython's special syntax.""" |
|
684 | 699 | |
|
685 | 700 | # String with raw, untransformed input. |
|
686 | 701 | source_raw = '' |
|
687 | 702 | |
|
688 |
cell_magic_ |
|
|
703 | cell_magic_parts = [] | |
|
704 | ||
|
705 | cell_magic_mode = False | |
|
689 | 706 | |
|
690 | 707 | # Private attributes |
|
691 | ||
|
708 | ||
|
692 | 709 | # List with lines of raw input accumulated so far. |
|
693 | 710 | _buffer_raw = None |
|
694 | 711 | |
|
695 | 712 | def __init__(self, input_mode=None): |
|
696 | 713 | super(IPythonInputSplitter, self).__init__(input_mode) |
|
697 | 714 | self._buffer_raw = [] |
|
715 | self._validate = True | |
|
698 | 716 | |
|
699 | 717 | def reset(self): |
|
700 | 718 | """Reset the input buffer and associated state.""" |
|
701 | 719 | super(IPythonInputSplitter, self).reset() |
|
702 | 720 | self._buffer_raw[:] = [] |
|
703 | 721 | self.source_raw = '' |
|
704 |
self.cell_magic_ |
|
|
722 | self.cell_magic_parts = [] | |
|
723 | self.cell_magic_mode = False | |
|
705 | 724 | |
|
706 | 725 | def source_raw_reset(self): |
|
707 | 726 | """Return input and raw source and perform a full reset. |
|
708 | 727 | """ |
|
709 | 728 | out = self.source |
|
710 | 729 | out_r = self.source_raw |
|
711 | 730 | self.reset() |
|
712 | 731 | return out, out_r |
|
713 | 732 | |
|
733 | def push_accepts_more(self): | |
|
734 | if self.cell_magic_mode: | |
|
735 | return not self._is_complete | |
|
736 | else: | |
|
737 | return super(IPythonInputSplitter, self).push_accepts_more() | |
|
738 | ||
|
739 | def _push_line_mode(self, lines): | |
|
740 | """Push in line mode. | |
|
741 | ||
|
742 | This means that we only get individual 'lines' with each call, though | |
|
743 | in practice each input may be multiline. But this is in contrast to | |
|
744 | cell mode, which feeds the entirety of the cell from the start with | |
|
745 | each call. | |
|
746 | """ | |
|
747 | # cell magic support | |
|
748 | #print('#'*10) | |
|
749 | #print(lines+'\n---') # dbg | |
|
750 | #print (repr(lines)+'\n+++') | |
|
751 | #print('raw', self._buffer_raw, 'validate', self.cell_magic_mode) | |
|
752 | # Only trigger this block if we're at a 'fresh' pumping start. | |
|
753 | if lines.startswith('%%') and (not self.cell_magic_mode) and \ | |
|
754 | not self._buffer_raw: | |
|
755 | # Cell magics bypass all further transformations | |
|
756 | self.cell_magic_mode = True | |
|
757 | first, _, body = lines.partition('\n') | |
|
758 | magic_name, _, line = first.partition(' ') | |
|
759 | magic_name = magic_name.lstrip(ESC_MAGIC) | |
|
760 | # We store the body of the cell and create a call to a method that | |
|
761 | # will use this stored value. This is ugly, but it's a first cut to | |
|
762 | # get it all working, as right now changing the return API of our | |
|
763 | # methods would require major refactoring. | |
|
764 | self.cell_magic_parts = [body] | |
|
765 | tpl = 'get_ipython()._cell_magic(%r, %r)' | |
|
766 | tlines = tpl % (magic_name, line) | |
|
767 | self._store(tlines) | |
|
768 | self._store(lines, self._buffer_raw, 'source_raw') | |
|
769 | self._is_complete = False | |
|
770 | return False | |
|
771 | ||
|
772 | if self.cell_magic_mode: | |
|
773 | # Find out if the last stored block has a whitespace line as its | |
|
774 | # last line and also this line is whitespace, case in which we're | |
|
775 | # done (two contiguous blank lines signal termination). Note that | |
|
776 | # the storage logic *enforces* that every stored block is | |
|
777 | # newline-terminated, so we grab everything but the last character | |
|
778 | # so we can have the body of the block alone. | |
|
779 | last_block = self.cell_magic_parts[-1] | |
|
780 | self._is_complete = last_blank(last_block) and lines.isspace() | |
|
781 | # Only store the raw input. For lines beyond the first one, we | |
|
782 | # only store them for history purposes, and for execution we want | |
|
783 | # the caller to only receive the _cell_magic() call. | |
|
784 | self._store(lines, self._buffer_raw, 'source_raw') | |
|
785 | self.cell_magic_parts.append(lines) | |
|
786 | return self._is_complete | |
|
787 | ||
|
788 | lines_list = lines.splitlines() | |
|
789 | ||
|
790 | transforms = [transform_ipy_prompt, transform_classic_prompt, | |
|
791 | transform_help_end, transform_escaped, | |
|
792 | transform_assign_system, transform_assign_magic] | |
|
793 | ||
|
794 | # Transform logic | |
|
795 | # | |
|
796 | # We only apply the line transformers to the input if we have either no | |
|
797 | # input yet, or complete input, or if the last line of the buffer ends | |
|
798 | # with ':' (opening an indented block). This prevents the accidental | |
|
799 | # transformation of escapes inside multiline expressions like | |
|
800 | # triple-quoted strings or parenthesized expressions. | |
|
801 | # | |
|
802 | # The last heuristic, while ugly, ensures that the first line of an | |
|
803 | # indented block is correctly transformed. | |
|
804 | # | |
|
805 | # FIXME: try to find a cleaner approach for this last bit. | |
|
806 | ||
|
807 | # Store raw source before applying any transformations to it. Note | |
|
808 | # that this must be done *after* the reset() call that would otherwise | |
|
809 | # flush the buffer. | |
|
810 | self._store(lines, self._buffer_raw, 'source_raw') | |
|
811 | ||
|
812 | push = super(IPythonInputSplitter, self).push | |
|
813 | buf = self._buffer | |
|
814 | for line in lines_list: | |
|
815 | if self._is_complete or not buf or \ | |
|
816 | (buf and buf[-1].rstrip().endswith((':', ','))): | |
|
817 | for f in transforms: | |
|
818 | line = f(line) | |
|
819 | ||
|
820 | out = push(line) | |
|
821 | return out | |
|
822 | ||
|
714 | 823 | def push(self, lines): |
|
715 | 824 | """Push one or more lines of IPython input. |
|
716 | 825 | |
|
717 | 826 | This stores the given lines and returns a status code indicating |
|
718 | 827 | whether the code forms a complete Python block or not, after processing |
|
719 | 828 | all input lines for special IPython syntax. |
|
720 | 829 | |
|
721 | 830 | Any exceptions generated in compilation are swallowed, but if an |
|
722 | 831 | exception was produced, the method returns True. |
|
723 | 832 | |
|
724 | 833 | Parameters |
|
725 | 834 | ---------- |
|
726 | 835 | lines : string |
|
727 | 836 | One or more lines of Python input. |
|
728 | 837 | |
|
729 | 838 | Returns |
|
730 | 839 | ------- |
|
731 | 840 | is_complete : boolean |
|
732 | 841 | True if the current input source (the result of the current input |
|
733 | 842 | plus prior inputs) forms a complete Python execution block. Note that |
|
734 | 843 | this value is also stored as a private attribute (_is_complete), so it |
|
735 | 844 | can be queried at any time. |
|
736 | 845 | """ |
|
846 | print('mode:', self.input_mode) | |
|
847 | print('lines:',repr(lines)) | |
|
737 | 848 | if not lines: |
|
738 | 849 | return super(IPythonInputSplitter, self).push(lines) |
|
739 | 850 | |
|
740 | 851 | # We must ensure all input is pure unicode |
|
741 | 852 | lines = cast_unicode(lines, self.encoding) |
|
742 | 853 | |
|
743 | # cell magic support | |
|
744 | #print('IM:', self.input_mode,'\n'+lines); print('---') # dbg | |
|
745 | #if self.input_mode == 'cell' and lines.startswith('%%'): | |
|
746 | if lines.startswith('%%'): | |
|
747 | # Cell magics bypass all further transformations | |
|
748 | self.reset() | |
|
749 | self._is_complete = is_complete = True | |
|
750 | first, _, body = lines.partition('\n') | |
|
751 | magic_name, _, line = first.partition(' ') | |
|
752 | magic_name = magic_name.lstrip(ESC_MAGIC) | |
|
753 | self.cell_magic_body = body | |
|
754 | tpl = 'get_ipython()._cell_magic(%r, %r)' | |
|
755 | lines = tpl % (magic_name, line) | |
|
854 | if self.input_mode == 'line': | |
|
855 | return self._push_line_mode(lines) | |
|
856 | ||
|
857 | ## else: | |
|
858 | ## return self._push_cell_mode(lines) | |
|
756 | 859 | |
|
757 | 860 | lines_list = lines.splitlines() |
|
758 | 861 | |
|
759 | 862 | transforms = [transform_ipy_prompt, transform_classic_prompt, |
|
760 | 863 | transform_help_end, transform_escaped, |
|
761 | 864 | transform_assign_system, transform_assign_magic] |
|
762 | 865 | |
|
763 | 866 | # Transform logic |
|
764 | 867 | # |
|
765 | 868 | # We only apply the line transformers to the input if we have either no |
|
766 | 869 | # input yet, or complete input, or if the last line of the buffer ends |
|
767 | 870 | # with ':' (opening an indented block). This prevents the accidental |
|
768 | 871 | # transformation of escapes inside multiline expressions like |
|
769 | 872 | # triple-quoted strings or parenthesized expressions. |
|
770 | 873 | # |
|
771 | 874 | # The last heuristic, while ugly, ensures that the first line of an |
|
772 | 875 | # indented block is correctly transformed. |
|
773 | 876 | # |
|
774 | 877 | # FIXME: try to find a cleaner approach for this last bit. |
|
775 | 878 | |
|
776 | 879 | # If we were in 'block' mode, since we're going to pump the parent |
|
777 | 880 | # class by hand line by line, we need to temporarily switch out to |
|
778 | 881 | # 'line' mode, do a single manual reset and then feed the lines one |
|
779 | 882 | # by one. Note that this only matters if the input has more than one |
|
780 | 883 | # line. |
|
781 | 884 | changed_input_mode = False |
|
782 | 885 | |
|
783 | 886 | if self.input_mode == 'cell': |
|
784 | 887 | self.reset() |
|
785 | 888 | changed_input_mode = True |
|
786 | 889 | saved_input_mode = 'cell' |
|
787 | 890 | self.input_mode = 'line' |
|
788 | 891 | |
|
789 | 892 | # Store raw source before applying any transformations to it. Note |
|
790 | 893 | # that this must be done *after* the reset() call that would otherwise |
|
791 | 894 | # flush the buffer. |
|
792 | 895 | self._store(lines, self._buffer_raw, 'source_raw') |
|
793 | 896 | |
|
794 | 897 | try: |
|
795 | 898 | push = super(IPythonInputSplitter, self).push |
|
796 | 899 | buf = self._buffer |
|
797 | 900 | for line in lines_list: |
|
798 | 901 | if self._is_complete or not buf or \ |
|
799 |
(buf and |
|
|
800 | buf[-1].rstrip().endswith(',')) ): | |
|
902 | (buf and buf[-1].rstrip().endswith((':', ','))): | |
|
801 | 903 | for f in transforms: |
|
802 | 904 | line = f(line) |
|
803 | 905 | |
|
804 | 906 | out = push(line) |
|
805 | 907 | finally: |
|
806 | 908 | if changed_input_mode: |
|
807 | 909 | self.input_mode = saved_input_mode |
|
808 | 910 | return out |
@@ -1,2950 +1,2952 b'' | |||
|
1 | 1 | # -*- coding: utf-8 -*- |
|
2 | 2 | """Main IPython class.""" |
|
3 | 3 | |
|
4 | 4 | #----------------------------------------------------------------------------- |
|
5 | 5 | # Copyright (C) 2001 Janko Hauser <jhauser@zscout.de> |
|
6 | 6 | # Copyright (C) 2001-2007 Fernando Perez. <fperez@colorado.edu> |
|
7 | 7 | # Copyright (C) 2008-2011 The IPython Development Team |
|
8 | 8 | # |
|
9 | 9 | # Distributed under the terms of the BSD License. The full license is in |
|
10 | 10 | # the file COPYING, distributed as part of this software. |
|
11 | 11 | #----------------------------------------------------------------------------- |
|
12 | 12 | |
|
13 | 13 | #----------------------------------------------------------------------------- |
|
14 | 14 | # Imports |
|
15 | 15 | #----------------------------------------------------------------------------- |
|
16 | 16 | |
|
17 | 17 | from __future__ import with_statement |
|
18 | 18 | from __future__ import absolute_import |
|
19 | 19 | |
|
20 | 20 | import __builtin__ as builtin_mod |
|
21 | 21 | import __future__ |
|
22 | 22 | import abc |
|
23 | 23 | import ast |
|
24 | 24 | import atexit |
|
25 | 25 | import os |
|
26 | 26 | import re |
|
27 | 27 | import runpy |
|
28 | 28 | import sys |
|
29 | 29 | import tempfile |
|
30 | 30 | import types |
|
31 | 31 | import urllib |
|
32 | 32 | from io import open as io_open |
|
33 | 33 | |
|
34 | 34 | from IPython.config.configurable import SingletonConfigurable |
|
35 | 35 | from IPython.core import debugger, oinspect |
|
36 | 36 | from IPython.core import history as ipcorehist |
|
37 | 37 | from IPython.core import magic |
|
38 | 38 | from IPython.core import page |
|
39 | 39 | from IPython.core import prefilter |
|
40 | 40 | from IPython.core import shadowns |
|
41 | 41 | from IPython.core import ultratb |
|
42 | 42 | from IPython.core.alias import AliasManager, AliasError |
|
43 | 43 | from IPython.core.autocall import ExitAutocall |
|
44 | 44 | from IPython.core.builtin_trap import BuiltinTrap |
|
45 | 45 | from IPython.core.compilerop import CachingCompiler |
|
46 | 46 | from IPython.core.display_trap import DisplayTrap |
|
47 | 47 | from IPython.core.displayhook import DisplayHook |
|
48 | 48 | from IPython.core.displaypub import DisplayPublisher |
|
49 | 49 | from IPython.core.error import UsageError |
|
50 | 50 | from IPython.core.extensions import ExtensionManager |
|
51 | 51 | from IPython.core.fakemodule import FakeModule, init_fakemod_dict |
|
52 | 52 | from IPython.core.formatters import DisplayFormatter |
|
53 | 53 | from IPython.core.history import HistoryManager |
|
54 | 54 | from IPython.core.inputsplitter import IPythonInputSplitter |
|
55 | 55 | from IPython.core.logger import Logger |
|
56 | 56 | from IPython.core.macro import Macro |
|
57 | 57 | from IPython.core.payload import PayloadManager |
|
58 | 58 | from IPython.core.plugin import PluginManager |
|
59 | 59 | from IPython.core.prefilter import PrefilterManager, ESC_MAGIC |
|
60 | 60 | from IPython.core.profiledir import ProfileDir |
|
61 | 61 | from IPython.core.pylabtools import pylab_activate |
|
62 | 62 | from IPython.core.prompts import PromptManager |
|
63 | 63 | from IPython.utils import PyColorize |
|
64 | 64 | from IPython.utils import io |
|
65 | 65 | from IPython.utils import py3compat |
|
66 | 66 | from IPython.utils import openpy |
|
67 | 67 | from IPython.utils.doctestreload import doctest_reload |
|
68 | 68 | from IPython.utils.io import ask_yes_no |
|
69 | 69 | from IPython.utils.ipstruct import Struct |
|
70 | 70 | from IPython.utils.path import get_home_dir, get_ipython_dir, get_py_filename, unquote_filename |
|
71 | 71 | from IPython.utils.pickleshare import PickleShareDB |
|
72 | 72 | from IPython.utils.process import system, getoutput |
|
73 | 73 | from IPython.utils.strdispatch import StrDispatch |
|
74 | 74 | from IPython.utils.syspathcontext import prepended_to_syspath |
|
75 | 75 | from IPython.utils.text import (format_screen, LSString, SList, |
|
76 | 76 | DollarFormatter) |
|
77 | 77 | from IPython.utils.traitlets import (Integer, CBool, CaselessStrEnum, Enum, |
|
78 | 78 | List, Unicode, Instance, Type) |
|
79 | 79 | from IPython.utils.warn import warn, error |
|
80 | 80 | import IPython.core.hooks |
|
81 | 81 | |
|
82 | 82 | #----------------------------------------------------------------------------- |
|
83 | 83 | # Globals |
|
84 | 84 | #----------------------------------------------------------------------------- |
|
85 | 85 | |
|
86 | 86 | # compiled regexps for autoindent management |
|
87 | 87 | dedent_re = re.compile(r'^\s+raise|^\s+return|^\s+pass') |
|
88 | 88 | |
|
89 | 89 | #----------------------------------------------------------------------------- |
|
90 | 90 | # Utilities |
|
91 | 91 | #----------------------------------------------------------------------------- |
|
92 | 92 | |
|
93 | 93 | def softspace(file, newvalue): |
|
94 | 94 | """Copied from code.py, to remove the dependency""" |
|
95 | 95 | |
|
96 | 96 | oldvalue = 0 |
|
97 | 97 | try: |
|
98 | 98 | oldvalue = file.softspace |
|
99 | 99 | except AttributeError: |
|
100 | 100 | pass |
|
101 | 101 | try: |
|
102 | 102 | file.softspace = newvalue |
|
103 | 103 | except (AttributeError, TypeError): |
|
104 | 104 | # "attribute-less object" or "read-only attributes" |
|
105 | 105 | pass |
|
106 | 106 | return oldvalue |
|
107 | 107 | |
|
108 | 108 | |
|
109 | 109 | def no_op(*a, **kw): pass |
|
110 | 110 | |
|
111 | 111 | class NoOpContext(object): |
|
112 | 112 | def __enter__(self): pass |
|
113 | 113 | def __exit__(self, type, value, traceback): pass |
|
114 | 114 | no_op_context = NoOpContext() |
|
115 | 115 | |
|
116 | 116 | class SpaceInInput(Exception): pass |
|
117 | 117 | |
|
118 | 118 | class Bunch: pass |
|
119 | 119 | |
|
120 | 120 | |
|
121 | 121 | def get_default_colors(): |
|
122 | 122 | if sys.platform=='darwin': |
|
123 | 123 | return "LightBG" |
|
124 | 124 | elif os.name=='nt': |
|
125 | 125 | return 'Linux' |
|
126 | 126 | else: |
|
127 | 127 | return 'Linux' |
|
128 | 128 | |
|
129 | 129 | |
|
130 | 130 | class SeparateUnicode(Unicode): |
|
131 | 131 | """A Unicode subclass to validate separate_in, separate_out, etc. |
|
132 | 132 | |
|
133 | 133 | This is a Unicode based trait that converts '0'->'' and '\\n'->'\n'. |
|
134 | 134 | """ |
|
135 | 135 | |
|
136 | 136 | def validate(self, obj, value): |
|
137 | 137 | if value == '0': value = '' |
|
138 | 138 | value = value.replace('\\n','\n') |
|
139 | 139 | return super(SeparateUnicode, self).validate(obj, value) |
|
140 | 140 | |
|
141 | 141 | |
|
142 | 142 | class ReadlineNoRecord(object): |
|
143 | 143 | """Context manager to execute some code, then reload readline history |
|
144 | 144 | so that interactive input to the code doesn't appear when pressing up.""" |
|
145 | 145 | def __init__(self, shell): |
|
146 | 146 | self.shell = shell |
|
147 | 147 | self._nested_level = 0 |
|
148 | 148 | |
|
149 | 149 | def __enter__(self): |
|
150 | 150 | if self._nested_level == 0: |
|
151 | 151 | try: |
|
152 | 152 | self.orig_length = self.current_length() |
|
153 | 153 | self.readline_tail = self.get_readline_tail() |
|
154 | 154 | except (AttributeError, IndexError): # Can fail with pyreadline |
|
155 | 155 | self.orig_length, self.readline_tail = 999999, [] |
|
156 | 156 | self._nested_level += 1 |
|
157 | 157 | |
|
158 | 158 | def __exit__(self, type, value, traceback): |
|
159 | 159 | self._nested_level -= 1 |
|
160 | 160 | if self._nested_level == 0: |
|
161 | 161 | # Try clipping the end if it's got longer |
|
162 | 162 | try: |
|
163 | 163 | e = self.current_length() - self.orig_length |
|
164 | 164 | if e > 0: |
|
165 | 165 | for _ in range(e): |
|
166 | 166 | self.shell.readline.remove_history_item(self.orig_length) |
|
167 | 167 | |
|
168 | 168 | # If it still doesn't match, just reload readline history. |
|
169 | 169 | if self.current_length() != self.orig_length \ |
|
170 | 170 | or self.get_readline_tail() != self.readline_tail: |
|
171 | 171 | self.shell.refill_readline_hist() |
|
172 | 172 | except (AttributeError, IndexError): |
|
173 | 173 | pass |
|
174 | 174 | # Returning False will cause exceptions to propagate |
|
175 | 175 | return False |
|
176 | 176 | |
|
177 | 177 | def current_length(self): |
|
178 | 178 | return self.shell.readline.get_current_history_length() |
|
179 | 179 | |
|
180 | 180 | def get_readline_tail(self, n=10): |
|
181 | 181 | """Get the last n items in readline history.""" |
|
182 | 182 | end = self.shell.readline.get_current_history_length() + 1 |
|
183 | 183 | start = max(end-n, 1) |
|
184 | 184 | ghi = self.shell.readline.get_history_item |
|
185 | 185 | return [ghi(x) for x in range(start, end)] |
|
186 | 186 | |
|
187 | 187 | #----------------------------------------------------------------------------- |
|
188 | 188 | # Main IPython class |
|
189 | 189 | #----------------------------------------------------------------------------- |
|
190 | 190 | |
|
191 | 191 | class InteractiveShell(SingletonConfigurable): |
|
192 | 192 | """An enhanced, interactive shell for Python.""" |
|
193 | 193 | |
|
194 | 194 | _instance = None |
|
195 | 195 | |
|
196 | 196 | autocall = Enum((0,1,2), default_value=0, config=True, help= |
|
197 | 197 | """ |
|
198 | 198 | Make IPython automatically call any callable object even if you didn't |
|
199 | 199 | type explicit parentheses. For example, 'str 43' becomes 'str(43)' |
|
200 | 200 | automatically. The value can be '0' to disable the feature, '1' for |
|
201 | 201 | 'smart' autocall, where it is not applied if there are no more |
|
202 | 202 | arguments on the line, and '2' for 'full' autocall, where all callable |
|
203 | 203 | objects are automatically called (even if no arguments are present). |
|
204 | 204 | """ |
|
205 | 205 | ) |
|
206 | 206 | # TODO: remove all autoindent logic and put into frontends. |
|
207 | 207 | # We can't do this yet because even runlines uses the autoindent. |
|
208 | 208 | autoindent = CBool(True, config=True, help= |
|
209 | 209 | """ |
|
210 | 210 | Autoindent IPython code entered interactively. |
|
211 | 211 | """ |
|
212 | 212 | ) |
|
213 | 213 | automagic = CBool(True, config=True, help= |
|
214 | 214 | """ |
|
215 | 215 | Enable magic commands to be called without the leading %. |
|
216 | 216 | """ |
|
217 | 217 | ) |
|
218 | 218 | cache_size = Integer(1000, config=True, help= |
|
219 | 219 | """ |
|
220 | 220 | Set the size of the output cache. The default is 1000, you can |
|
221 | 221 | change it permanently in your config file. Setting it to 0 completely |
|
222 | 222 | disables the caching system, and the minimum value accepted is 20 (if |
|
223 | 223 | you provide a value less than 20, it is reset to 0 and a warning is |
|
224 | 224 | issued). This limit is defined because otherwise you'll spend more |
|
225 | 225 | time re-flushing a too small cache than working |
|
226 | 226 | """ |
|
227 | 227 | ) |
|
228 | 228 | color_info = CBool(True, config=True, help= |
|
229 | 229 | """ |
|
230 | 230 | Use colors for displaying information about objects. Because this |
|
231 | 231 | information is passed through a pager (like 'less'), and some pagers |
|
232 | 232 | get confused with color codes, this capability can be turned off. |
|
233 | 233 | """ |
|
234 | 234 | ) |
|
235 | 235 | colors = CaselessStrEnum(('NoColor','LightBG','Linux'), |
|
236 | 236 | default_value=get_default_colors(), config=True, |
|
237 | 237 | help="Set the color scheme (NoColor, Linux, or LightBG)." |
|
238 | 238 | ) |
|
239 | 239 | colors_force = CBool(False, help= |
|
240 | 240 | """ |
|
241 | 241 | Force use of ANSI color codes, regardless of OS and readline |
|
242 | 242 | availability. |
|
243 | 243 | """ |
|
244 | 244 | # FIXME: This is essentially a hack to allow ZMQShell to show colors |
|
245 | 245 | # without readline on Win32. When the ZMQ formatting system is |
|
246 | 246 | # refactored, this should be removed. |
|
247 | 247 | ) |
|
248 | 248 | debug = CBool(False, config=True) |
|
249 | 249 | deep_reload = CBool(False, config=True, help= |
|
250 | 250 | """ |
|
251 | 251 | Enable deep (recursive) reloading by default. IPython can use the |
|
252 | 252 | deep_reload module which reloads changes in modules recursively (it |
|
253 | 253 | replaces the reload() function, so you don't need to change anything to |
|
254 | 254 | use it). deep_reload() forces a full reload of modules whose code may |
|
255 | 255 | have changed, which the default reload() function does not. When |
|
256 | 256 | deep_reload is off, IPython will use the normal reload(), but |
|
257 | 257 | deep_reload will still be available as dreload(). |
|
258 | 258 | """ |
|
259 | 259 | ) |
|
260 | 260 | disable_failing_post_execute = CBool(False, config=True, |
|
261 | 261 | help="Don't call post-execute functions that have failed in the past.""" |
|
262 | 262 | ) |
|
263 | 263 | display_formatter = Instance(DisplayFormatter) |
|
264 | 264 | displayhook_class = Type(DisplayHook) |
|
265 | 265 | display_pub_class = Type(DisplayPublisher) |
|
266 | 266 | |
|
267 | 267 | exit_now = CBool(False) |
|
268 | 268 | exiter = Instance(ExitAutocall) |
|
269 | 269 | def _exiter_default(self): |
|
270 | 270 | return ExitAutocall(self) |
|
271 | 271 | # Monotonically increasing execution counter |
|
272 | 272 | execution_count = Integer(1) |
|
273 | 273 | filename = Unicode("<ipython console>") |
|
274 | 274 | ipython_dir= Unicode('', config=True) # Set to get_ipython_dir() in __init__ |
|
275 | 275 | |
|
276 | 276 | # Input splitter, to split entire cells of input into either individual |
|
277 | 277 | # interactive statements or whole blocks. |
|
278 | 278 | input_splitter = Instance('IPython.core.inputsplitter.IPythonInputSplitter', |
|
279 | 279 | (), {}) |
|
280 | 280 | logstart = CBool(False, config=True, help= |
|
281 | 281 | """ |
|
282 | 282 | Start logging to the default log file. |
|
283 | 283 | """ |
|
284 | 284 | ) |
|
285 | 285 | logfile = Unicode('', config=True, help= |
|
286 | 286 | """ |
|
287 | 287 | The name of the logfile to use. |
|
288 | 288 | """ |
|
289 | 289 | ) |
|
290 | 290 | logappend = Unicode('', config=True, help= |
|
291 | 291 | """ |
|
292 | 292 | Start logging to the given file in append mode. |
|
293 | 293 | """ |
|
294 | 294 | ) |
|
295 | 295 | object_info_string_level = Enum((0,1,2), default_value=0, |
|
296 | 296 | config=True) |
|
297 | 297 | pdb = CBool(False, config=True, help= |
|
298 | 298 | """ |
|
299 | 299 | Automatically call the pdb debugger after every exception. |
|
300 | 300 | """ |
|
301 | 301 | ) |
|
302 | 302 | multiline_history = CBool(sys.platform != 'win32', config=True, |
|
303 | 303 | help="Save multi-line entries as one entry in readline history" |
|
304 | 304 | ) |
|
305 | 305 | |
|
306 | 306 | # deprecated prompt traits: |
|
307 | 307 | |
|
308 | 308 | prompt_in1 = Unicode('In [\\#]: ', config=True, |
|
309 | 309 | help="Deprecated, use PromptManager.in_template") |
|
310 | 310 | prompt_in2 = Unicode(' .\\D.: ', config=True, |
|
311 | 311 | help="Deprecated, use PromptManager.in2_template") |
|
312 | 312 | prompt_out = Unicode('Out[\\#]: ', config=True, |
|
313 | 313 | help="Deprecated, use PromptManager.out_template") |
|
314 | 314 | prompts_pad_left = CBool(True, config=True, |
|
315 | 315 | help="Deprecated, use PromptManager.justify") |
|
316 | 316 | |
|
317 | 317 | def _prompt_trait_changed(self, name, old, new): |
|
318 | 318 | table = { |
|
319 | 319 | 'prompt_in1' : 'in_template', |
|
320 | 320 | 'prompt_in2' : 'in2_template', |
|
321 | 321 | 'prompt_out' : 'out_template', |
|
322 | 322 | 'prompts_pad_left' : 'justify', |
|
323 | 323 | } |
|
324 | 324 | warn("InteractiveShell.{name} is deprecated, use PromptManager.{newname}\n".format( |
|
325 | 325 | name=name, newname=table[name]) |
|
326 | 326 | ) |
|
327 | 327 | # protect against weird cases where self.config may not exist: |
|
328 | 328 | if self.config is not None: |
|
329 | 329 | # propagate to corresponding PromptManager trait |
|
330 | 330 | setattr(self.config.PromptManager, table[name], new) |
|
331 | 331 | |
|
332 | 332 | _prompt_in1_changed = _prompt_trait_changed |
|
333 | 333 | _prompt_in2_changed = _prompt_trait_changed |
|
334 | 334 | _prompt_out_changed = _prompt_trait_changed |
|
335 | 335 | _prompt_pad_left_changed = _prompt_trait_changed |
|
336 | 336 | |
|
337 | 337 | show_rewritten_input = CBool(True, config=True, |
|
338 | 338 | help="Show rewritten input, e.g. for autocall." |
|
339 | 339 | ) |
|
340 | 340 | |
|
341 | 341 | quiet = CBool(False, config=True) |
|
342 | 342 | |
|
343 | 343 | history_length = Integer(10000, config=True) |
|
344 | 344 | |
|
345 | 345 | # The readline stuff will eventually be moved to the terminal subclass |
|
346 | 346 | # but for now, we can't do that as readline is welded in everywhere. |
|
347 | 347 | readline_use = CBool(True, config=True) |
|
348 | 348 | readline_remove_delims = Unicode('-/~', config=True) |
|
349 | 349 | # don't use \M- bindings by default, because they |
|
350 | 350 | # conflict with 8-bit encodings. See gh-58,gh-88 |
|
351 | 351 | readline_parse_and_bind = List([ |
|
352 | 352 | 'tab: complete', |
|
353 | 353 | '"\C-l": clear-screen', |
|
354 | 354 | 'set show-all-if-ambiguous on', |
|
355 | 355 | '"\C-o": tab-insert', |
|
356 | 356 | '"\C-r": reverse-search-history', |
|
357 | 357 | '"\C-s": forward-search-history', |
|
358 | 358 | '"\C-p": history-search-backward', |
|
359 | 359 | '"\C-n": history-search-forward', |
|
360 | 360 | '"\e[A": history-search-backward', |
|
361 | 361 | '"\e[B": history-search-forward', |
|
362 | 362 | '"\C-k": kill-line', |
|
363 | 363 | '"\C-u": unix-line-discard', |
|
364 | 364 | ], allow_none=False, config=True) |
|
365 | 365 | |
|
366 | 366 | # TODO: this part of prompt management should be moved to the frontends. |
|
367 | 367 | # Use custom TraitTypes that convert '0'->'' and '\\n'->'\n' |
|
368 | 368 | separate_in = SeparateUnicode('\n', config=True) |
|
369 | 369 | separate_out = SeparateUnicode('', config=True) |
|
370 | 370 | separate_out2 = SeparateUnicode('', config=True) |
|
371 | 371 | wildcards_case_sensitive = CBool(True, config=True) |
|
372 | 372 | xmode = CaselessStrEnum(('Context','Plain', 'Verbose'), |
|
373 | 373 | default_value='Context', config=True) |
|
374 | 374 | |
|
375 | 375 | # Subcomponents of InteractiveShell |
|
376 | 376 | alias_manager = Instance('IPython.core.alias.AliasManager') |
|
377 | 377 | prefilter_manager = Instance('IPython.core.prefilter.PrefilterManager') |
|
378 | 378 | builtin_trap = Instance('IPython.core.builtin_trap.BuiltinTrap') |
|
379 | 379 | display_trap = Instance('IPython.core.display_trap.DisplayTrap') |
|
380 | 380 | extension_manager = Instance('IPython.core.extensions.ExtensionManager') |
|
381 | 381 | plugin_manager = Instance('IPython.core.plugin.PluginManager') |
|
382 | 382 | payload_manager = Instance('IPython.core.payload.PayloadManager') |
|
383 | 383 | history_manager = Instance('IPython.core.history.HistoryManager') |
|
384 | 384 | magics_manager = Instance('IPython.core.magic.MagicsManager') |
|
385 | 385 | |
|
386 | 386 | profile_dir = Instance('IPython.core.application.ProfileDir') |
|
387 | 387 | @property |
|
388 | 388 | def profile(self): |
|
389 | 389 | if self.profile_dir is not None: |
|
390 | 390 | name = os.path.basename(self.profile_dir.location) |
|
391 | 391 | return name.replace('profile_','') |
|
392 | 392 | |
|
393 | 393 | |
|
394 | 394 | # Private interface |
|
395 | 395 | _post_execute = Instance(dict) |
|
396 | 396 | |
|
397 | 397 | def __init__(self, config=None, ipython_dir=None, profile_dir=None, |
|
398 | 398 | user_module=None, user_ns=None, |
|
399 | 399 | custom_exceptions=((), None)): |
|
400 | 400 | |
|
401 | 401 | # This is where traits with a config_key argument are updated |
|
402 | 402 | # from the values on config. |
|
403 | 403 | super(InteractiveShell, self).__init__(config=config) |
|
404 | 404 | self.configurables = [self] |
|
405 | 405 | |
|
406 | 406 | # These are relatively independent and stateless |
|
407 | 407 | self.init_ipython_dir(ipython_dir) |
|
408 | 408 | self.init_profile_dir(profile_dir) |
|
409 | 409 | self.init_instance_attrs() |
|
410 | 410 | self.init_environment() |
|
411 | 411 | |
|
412 | 412 | # Check if we're in a virtualenv, and set up sys.path. |
|
413 | 413 | self.init_virtualenv() |
|
414 | 414 | |
|
415 | 415 | # Create namespaces (user_ns, user_global_ns, etc.) |
|
416 | 416 | self.init_create_namespaces(user_module, user_ns) |
|
417 | 417 | # This has to be done after init_create_namespaces because it uses |
|
418 | 418 | # something in self.user_ns, but before init_sys_modules, which |
|
419 | 419 | # is the first thing to modify sys. |
|
420 | 420 | # TODO: When we override sys.stdout and sys.stderr before this class |
|
421 | 421 | # is created, we are saving the overridden ones here. Not sure if this |
|
422 | 422 | # is what we want to do. |
|
423 | 423 | self.save_sys_module_state() |
|
424 | 424 | self.init_sys_modules() |
|
425 | 425 | |
|
426 | 426 | # While we're trying to have each part of the code directly access what |
|
427 | 427 | # it needs without keeping redundant references to objects, we have too |
|
428 | 428 | # much legacy code that expects ip.db to exist. |
|
429 | 429 | self.db = PickleShareDB(os.path.join(self.profile_dir.location, 'db')) |
|
430 | 430 | |
|
431 | 431 | self.init_history() |
|
432 | 432 | self.init_encoding() |
|
433 | 433 | self.init_prefilter() |
|
434 | 434 | |
|
435 | 435 | self.init_syntax_highlighting() |
|
436 | 436 | self.init_hooks() |
|
437 | 437 | self.init_pushd_popd_magic() |
|
438 | 438 | # self.init_traceback_handlers use to be here, but we moved it below |
|
439 | 439 | # because it and init_io have to come after init_readline. |
|
440 | 440 | self.init_user_ns() |
|
441 | 441 | self.init_logger() |
|
442 | 442 | self.init_alias() |
|
443 | 443 | self.init_builtins() |
|
444 | 444 | |
|
445 | 445 | # pre_config_initialization |
|
446 | 446 | |
|
447 | 447 | # The next section should contain everything that was in ipmaker. |
|
448 | 448 | self.init_logstart() |
|
449 | 449 | |
|
450 | 450 | # The following was in post_config_initialization |
|
451 | 451 | self.init_inspector() |
|
452 | 452 | # init_readline() must come before init_io(), because init_io uses |
|
453 | 453 | # readline related things. |
|
454 | 454 | self.init_readline() |
|
455 | 455 | # We save this here in case user code replaces raw_input, but it needs |
|
456 | 456 | # to be after init_readline(), because PyPy's readline works by replacing |
|
457 | 457 | # raw_input. |
|
458 | 458 | if py3compat.PY3: |
|
459 | 459 | self.raw_input_original = input |
|
460 | 460 | else: |
|
461 | 461 | self.raw_input_original = raw_input |
|
462 | 462 | # init_completer must come after init_readline, because it needs to |
|
463 | 463 | # know whether readline is present or not system-wide to configure the |
|
464 | 464 | # completers, since the completion machinery can now operate |
|
465 | 465 | # independently of readline (e.g. over the network) |
|
466 | 466 | self.init_completer() |
|
467 | 467 | # TODO: init_io() needs to happen before init_traceback handlers |
|
468 | 468 | # because the traceback handlers hardcode the stdout/stderr streams. |
|
469 | 469 | # This logic in in debugger.Pdb and should eventually be changed. |
|
470 | 470 | self.init_io() |
|
471 | 471 | self.init_traceback_handlers(custom_exceptions) |
|
472 | 472 | self.init_prompts() |
|
473 | 473 | self.init_display_formatter() |
|
474 | 474 | self.init_display_pub() |
|
475 | 475 | self.init_displayhook() |
|
476 | 476 | self.init_reload_doctest() |
|
477 | 477 | self.init_magics() |
|
478 | 478 | self.init_pdb() |
|
479 | 479 | self.init_extension_manager() |
|
480 | 480 | self.init_plugin_manager() |
|
481 | 481 | self.init_payload() |
|
482 | 482 | self.hooks.late_startup_hook() |
|
483 | 483 | atexit.register(self.atexit_operations) |
|
484 | 484 | |
|
485 | 485 | def get_ipython(self): |
|
486 | 486 | """Return the currently running IPython instance.""" |
|
487 | 487 | return self |
|
488 | 488 | |
|
489 | 489 | #------------------------------------------------------------------------- |
|
490 | 490 | # Trait changed handlers |
|
491 | 491 | #------------------------------------------------------------------------- |
|
492 | 492 | |
|
493 | 493 | def _ipython_dir_changed(self, name, new): |
|
494 | 494 | if not os.path.isdir(new): |
|
495 | 495 | os.makedirs(new, mode = 0777) |
|
496 | 496 | |
|
497 | 497 | def set_autoindent(self,value=None): |
|
498 | 498 | """Set the autoindent flag, checking for readline support. |
|
499 | 499 | |
|
500 | 500 | If called with no arguments, it acts as a toggle.""" |
|
501 | 501 | |
|
502 | 502 | if value != 0 and not self.has_readline: |
|
503 | 503 | if os.name == 'posix': |
|
504 | 504 | warn("The auto-indent feature requires the readline library") |
|
505 | 505 | self.autoindent = 0 |
|
506 | 506 | return |
|
507 | 507 | if value is None: |
|
508 | 508 | self.autoindent = not self.autoindent |
|
509 | 509 | else: |
|
510 | 510 | self.autoindent = value |
|
511 | 511 | |
|
512 | 512 | #------------------------------------------------------------------------- |
|
513 | 513 | # init_* methods called by __init__ |
|
514 | 514 | #------------------------------------------------------------------------- |
|
515 | 515 | |
|
516 | 516 | def init_ipython_dir(self, ipython_dir): |
|
517 | 517 | if ipython_dir is not None: |
|
518 | 518 | self.ipython_dir = ipython_dir |
|
519 | 519 | return |
|
520 | 520 | |
|
521 | 521 | self.ipython_dir = get_ipython_dir() |
|
522 | 522 | |
|
523 | 523 | def init_profile_dir(self, profile_dir): |
|
524 | 524 | if profile_dir is not None: |
|
525 | 525 | self.profile_dir = profile_dir |
|
526 | 526 | return |
|
527 | 527 | self.profile_dir =\ |
|
528 | 528 | ProfileDir.create_profile_dir_by_name(self.ipython_dir, 'default') |
|
529 | 529 | |
|
530 | 530 | def init_instance_attrs(self): |
|
531 | 531 | self.more = False |
|
532 | 532 | |
|
533 | 533 | # command compiler |
|
534 | 534 | self.compile = CachingCompiler() |
|
535 | 535 | |
|
536 | 536 | # Make an empty namespace, which extension writers can rely on both |
|
537 | 537 | # existing and NEVER being used by ipython itself. This gives them a |
|
538 | 538 | # convenient location for storing additional information and state |
|
539 | 539 | # their extensions may require, without fear of collisions with other |
|
540 | 540 | # ipython names that may develop later. |
|
541 | 541 | self.meta = Struct() |
|
542 | 542 | |
|
543 | 543 | # Temporary files used for various purposes. Deleted at exit. |
|
544 | 544 | self.tempfiles = [] |
|
545 | 545 | |
|
546 | 546 | # Keep track of readline usage (later set by init_readline) |
|
547 | 547 | self.has_readline = False |
|
548 | 548 | |
|
549 | 549 | # keep track of where we started running (mainly for crash post-mortem) |
|
550 | 550 | # This is not being used anywhere currently. |
|
551 | 551 | self.starting_dir = os.getcwdu() |
|
552 | 552 | |
|
553 | 553 | # Indentation management |
|
554 | 554 | self.indent_current_nsp = 0 |
|
555 | 555 | |
|
556 | 556 | # Dict to track post-execution functions that have been registered |
|
557 | 557 | self._post_execute = {} |
|
558 | 558 | |
|
559 | 559 | def init_environment(self): |
|
560 | 560 | """Any changes we need to make to the user's environment.""" |
|
561 | 561 | pass |
|
562 | 562 | |
|
563 | 563 | def init_encoding(self): |
|
564 | 564 | # Get system encoding at startup time. Certain terminals (like Emacs |
|
565 | 565 | # under Win32 have it set to None, and we need to have a known valid |
|
566 | 566 | # encoding to use in the raw_input() method |
|
567 | 567 | try: |
|
568 | 568 | self.stdin_encoding = sys.stdin.encoding or 'ascii' |
|
569 | 569 | except AttributeError: |
|
570 | 570 | self.stdin_encoding = 'ascii' |
|
571 | 571 | |
|
572 | 572 | def init_syntax_highlighting(self): |
|
573 | 573 | # Python source parser/formatter for syntax highlighting |
|
574 | 574 | pyformat = PyColorize.Parser().format |
|
575 | 575 | self.pycolorize = lambda src: pyformat(src,'str',self.colors) |
|
576 | 576 | |
|
577 | 577 | def init_pushd_popd_magic(self): |
|
578 | 578 | # for pushd/popd management |
|
579 | 579 | self.home_dir = get_home_dir() |
|
580 | 580 | |
|
581 | 581 | self.dir_stack = [] |
|
582 | 582 | |
|
583 | 583 | def init_logger(self): |
|
584 | 584 | self.logger = Logger(self.home_dir, logfname='ipython_log.py', |
|
585 | 585 | logmode='rotate') |
|
586 | 586 | |
|
587 | 587 | def init_logstart(self): |
|
588 | 588 | """Initialize logging in case it was requested at the command line. |
|
589 | 589 | """ |
|
590 | 590 | if self.logappend: |
|
591 | 591 | self.magic('logstart %s append' % self.logappend) |
|
592 | 592 | elif self.logfile: |
|
593 | 593 | self.magic('logstart %' % self.logfile) |
|
594 | 594 | elif self.logstart: |
|
595 | 595 | self.magic('logstart') |
|
596 | 596 | |
|
597 | 597 | def init_builtins(self): |
|
598 | 598 | # A single, static flag that we set to True. Its presence indicates |
|
599 | 599 | # that an IPython shell has been created, and we make no attempts at |
|
600 | 600 | # removing on exit or representing the existence of more than one |
|
601 | 601 | # IPython at a time. |
|
602 | 602 | builtin_mod.__dict__['__IPYTHON__'] = True |
|
603 | 603 | |
|
604 | 604 | # In 0.11 we introduced '__IPYTHON__active' as an integer we'd try to |
|
605 | 605 | # manage on enter/exit, but with all our shells it's virtually |
|
606 | 606 | # impossible to get all the cases right. We're leaving the name in for |
|
607 | 607 | # those who adapted their codes to check for this flag, but will |
|
608 | 608 | # eventually remove it after a few more releases. |
|
609 | 609 | builtin_mod.__dict__['__IPYTHON__active'] = \ |
|
610 | 610 | 'Deprecated, check for __IPYTHON__' |
|
611 | 611 | |
|
612 | 612 | self.builtin_trap = BuiltinTrap(shell=self) |
|
613 | 613 | |
|
614 | 614 | def init_inspector(self): |
|
615 | 615 | # Object inspector |
|
616 | 616 | self.inspector = oinspect.Inspector(oinspect.InspectColors, |
|
617 | 617 | PyColorize.ANSICodeColors, |
|
618 | 618 | 'NoColor', |
|
619 | 619 | self.object_info_string_level) |
|
620 | 620 | |
|
621 | 621 | def init_io(self): |
|
622 | 622 | # This will just use sys.stdout and sys.stderr. If you want to |
|
623 | 623 | # override sys.stdout and sys.stderr themselves, you need to do that |
|
624 | 624 | # *before* instantiating this class, because io holds onto |
|
625 | 625 | # references to the underlying streams. |
|
626 | 626 | if sys.platform == 'win32' and self.has_readline: |
|
627 | 627 | io.stdout = io.stderr = io.IOStream(self.readline._outputfile) |
|
628 | 628 | else: |
|
629 | 629 | io.stdout = io.IOStream(sys.stdout) |
|
630 | 630 | io.stderr = io.IOStream(sys.stderr) |
|
631 | 631 | |
|
632 | 632 | def init_prompts(self): |
|
633 | 633 | self.prompt_manager = PromptManager(shell=self, config=self.config) |
|
634 | 634 | self.configurables.append(self.prompt_manager) |
|
635 | 635 | # Set system prompts, so that scripts can decide if they are running |
|
636 | 636 | # interactively. |
|
637 | 637 | sys.ps1 = 'In : ' |
|
638 | 638 | sys.ps2 = '...: ' |
|
639 | 639 | sys.ps3 = 'Out: ' |
|
640 | 640 | |
|
641 | 641 | def init_display_formatter(self): |
|
642 | 642 | self.display_formatter = DisplayFormatter(config=self.config) |
|
643 | 643 | self.configurables.append(self.display_formatter) |
|
644 | 644 | |
|
645 | 645 | def init_display_pub(self): |
|
646 | 646 | self.display_pub = self.display_pub_class(config=self.config) |
|
647 | 647 | self.configurables.append(self.display_pub) |
|
648 | 648 | |
|
649 | 649 | def init_displayhook(self): |
|
650 | 650 | # Initialize displayhook, set in/out prompts and printing system |
|
651 | 651 | self.displayhook = self.displayhook_class( |
|
652 | 652 | config=self.config, |
|
653 | 653 | shell=self, |
|
654 | 654 | cache_size=self.cache_size, |
|
655 | 655 | ) |
|
656 | 656 | self.configurables.append(self.displayhook) |
|
657 | 657 | # This is a context manager that installs/revmoes the displayhook at |
|
658 | 658 | # the appropriate time. |
|
659 | 659 | self.display_trap = DisplayTrap(hook=self.displayhook) |
|
660 | 660 | |
|
661 | 661 | def init_reload_doctest(self): |
|
662 | 662 | # Do a proper resetting of doctest, including the necessary displayhook |
|
663 | 663 | # monkeypatching |
|
664 | 664 | try: |
|
665 | 665 | doctest_reload() |
|
666 | 666 | except ImportError: |
|
667 | 667 | warn("doctest module does not exist.") |
|
668 | 668 | |
|
669 | 669 | def init_virtualenv(self): |
|
670 | 670 | """Add a virtualenv to sys.path so the user can import modules from it. |
|
671 | 671 | This isn't perfect: it doesn't use the Python interpreter with which the |
|
672 | 672 | virtualenv was built, and it ignores the --no-site-packages option. A |
|
673 | 673 | warning will appear suggesting the user installs IPython in the |
|
674 | 674 | virtualenv, but for many cases, it probably works well enough. |
|
675 | 675 | |
|
676 | 676 | Adapted from code snippets online. |
|
677 | 677 | |
|
678 | 678 | http://blog.ufsoft.org/2009/1/29/ipython-and-virtualenv |
|
679 | 679 | """ |
|
680 | 680 | if 'VIRTUAL_ENV' not in os.environ: |
|
681 | 681 | # Not in a virtualenv |
|
682 | 682 | return |
|
683 | 683 | |
|
684 | 684 | if sys.executable.startswith(os.environ['VIRTUAL_ENV']): |
|
685 | 685 | # Running properly in the virtualenv, don't need to do anything |
|
686 | 686 | return |
|
687 | 687 | |
|
688 | 688 | warn("Attempting to work in a virtualenv. If you encounter problems, please " |
|
689 | 689 | "install IPython inside the virtualenv.\n") |
|
690 | 690 | if sys.platform == "win32": |
|
691 | 691 | virtual_env = os.path.join(os.environ['VIRTUAL_ENV'], 'Lib', 'site-packages') |
|
692 | 692 | else: |
|
693 | 693 | virtual_env = os.path.join(os.environ['VIRTUAL_ENV'], 'lib', |
|
694 | 694 | 'python%d.%d' % sys.version_info[:2], 'site-packages') |
|
695 | 695 | |
|
696 | 696 | import site |
|
697 | 697 | sys.path.insert(0, virtual_env) |
|
698 | 698 | site.addsitedir(virtual_env) |
|
699 | 699 | |
|
700 | 700 | #------------------------------------------------------------------------- |
|
701 | 701 | # Things related to injections into the sys module |
|
702 | 702 | #------------------------------------------------------------------------- |
|
703 | 703 | |
|
704 | 704 | def save_sys_module_state(self): |
|
705 | 705 | """Save the state of hooks in the sys module. |
|
706 | 706 | |
|
707 | 707 | This has to be called after self.user_module is created. |
|
708 | 708 | """ |
|
709 | 709 | self._orig_sys_module_state = {} |
|
710 | 710 | self._orig_sys_module_state['stdin'] = sys.stdin |
|
711 | 711 | self._orig_sys_module_state['stdout'] = sys.stdout |
|
712 | 712 | self._orig_sys_module_state['stderr'] = sys.stderr |
|
713 | 713 | self._orig_sys_module_state['excepthook'] = sys.excepthook |
|
714 | 714 | self._orig_sys_modules_main_name = self.user_module.__name__ |
|
715 | 715 | self._orig_sys_modules_main_mod = sys.modules.get(self.user_module.__name__) |
|
716 | 716 | |
|
717 | 717 | def restore_sys_module_state(self): |
|
718 | 718 | """Restore the state of the sys module.""" |
|
719 | 719 | try: |
|
720 | 720 | for k, v in self._orig_sys_module_state.iteritems(): |
|
721 | 721 | setattr(sys, k, v) |
|
722 | 722 | except AttributeError: |
|
723 | 723 | pass |
|
724 | 724 | # Reset what what done in self.init_sys_modules |
|
725 | 725 | if self._orig_sys_modules_main_mod is not None: |
|
726 | 726 | sys.modules[self._orig_sys_modules_main_name] = self._orig_sys_modules_main_mod |
|
727 | 727 | |
|
728 | 728 | #------------------------------------------------------------------------- |
|
729 | 729 | # Things related to hooks |
|
730 | 730 | #------------------------------------------------------------------------- |
|
731 | 731 | |
|
732 | 732 | def init_hooks(self): |
|
733 | 733 | # hooks holds pointers used for user-side customizations |
|
734 | 734 | self.hooks = Struct() |
|
735 | 735 | |
|
736 | 736 | self.strdispatchers = {} |
|
737 | 737 | |
|
738 | 738 | # Set all default hooks, defined in the IPython.hooks module. |
|
739 | 739 | hooks = IPython.core.hooks |
|
740 | 740 | for hook_name in hooks.__all__: |
|
741 | 741 | # default hooks have priority 100, i.e. low; user hooks should have |
|
742 | 742 | # 0-100 priority |
|
743 | 743 | self.set_hook(hook_name,getattr(hooks,hook_name), 100) |
|
744 | 744 | |
|
745 | 745 | def set_hook(self,name,hook, priority = 50, str_key = None, re_key = None): |
|
746 | 746 | """set_hook(name,hook) -> sets an internal IPython hook. |
|
747 | 747 | |
|
748 | 748 | IPython exposes some of its internal API as user-modifiable hooks. By |
|
749 | 749 | adding your function to one of these hooks, you can modify IPython's |
|
750 | 750 | behavior to call at runtime your own routines.""" |
|
751 | 751 | |
|
752 | 752 | # At some point in the future, this should validate the hook before it |
|
753 | 753 | # accepts it. Probably at least check that the hook takes the number |
|
754 | 754 | # of args it's supposed to. |
|
755 | 755 | |
|
756 | 756 | f = types.MethodType(hook,self) |
|
757 | 757 | |
|
758 | 758 | # check if the hook is for strdispatcher first |
|
759 | 759 | if str_key is not None: |
|
760 | 760 | sdp = self.strdispatchers.get(name, StrDispatch()) |
|
761 | 761 | sdp.add_s(str_key, f, priority ) |
|
762 | 762 | self.strdispatchers[name] = sdp |
|
763 | 763 | return |
|
764 | 764 | if re_key is not None: |
|
765 | 765 | sdp = self.strdispatchers.get(name, StrDispatch()) |
|
766 | 766 | sdp.add_re(re.compile(re_key), f, priority ) |
|
767 | 767 | self.strdispatchers[name] = sdp |
|
768 | 768 | return |
|
769 | 769 | |
|
770 | 770 | dp = getattr(self.hooks, name, None) |
|
771 | 771 | if name not in IPython.core.hooks.__all__: |
|
772 | 772 | print "Warning! Hook '%s' is not one of %s" % \ |
|
773 | 773 | (name, IPython.core.hooks.__all__ ) |
|
774 | 774 | if not dp: |
|
775 | 775 | dp = IPython.core.hooks.CommandChainDispatcher() |
|
776 | 776 | |
|
777 | 777 | try: |
|
778 | 778 | dp.add(f,priority) |
|
779 | 779 | except AttributeError: |
|
780 | 780 | # it was not commandchain, plain old func - replace |
|
781 | 781 | dp = f |
|
782 | 782 | |
|
783 | 783 | setattr(self.hooks,name, dp) |
|
784 | 784 | |
|
785 | 785 | def register_post_execute(self, func): |
|
786 | 786 | """Register a function for calling after code execution. |
|
787 | 787 | """ |
|
788 | 788 | if not callable(func): |
|
789 | 789 | raise ValueError('argument %s must be callable' % func) |
|
790 | 790 | self._post_execute[func] = True |
|
791 | 791 | |
|
792 | 792 | #------------------------------------------------------------------------- |
|
793 | 793 | # Things related to the "main" module |
|
794 | 794 | #------------------------------------------------------------------------- |
|
795 | 795 | |
|
796 | 796 | def new_main_mod(self,ns=None): |
|
797 | 797 | """Return a new 'main' module object for user code execution. |
|
798 | 798 | """ |
|
799 | 799 | main_mod = self._user_main_module |
|
800 | 800 | init_fakemod_dict(main_mod,ns) |
|
801 | 801 | return main_mod |
|
802 | 802 | |
|
803 | 803 | def cache_main_mod(self,ns,fname): |
|
804 | 804 | """Cache a main module's namespace. |
|
805 | 805 | |
|
806 | 806 | When scripts are executed via %run, we must keep a reference to the |
|
807 | 807 | namespace of their __main__ module (a FakeModule instance) around so |
|
808 | 808 | that Python doesn't clear it, rendering objects defined therein |
|
809 | 809 | useless. |
|
810 | 810 | |
|
811 | 811 | This method keeps said reference in a private dict, keyed by the |
|
812 | 812 | absolute path of the module object (which corresponds to the script |
|
813 | 813 | path). This way, for multiple executions of the same script we only |
|
814 | 814 | keep one copy of the namespace (the last one), thus preventing memory |
|
815 | 815 | leaks from old references while allowing the objects from the last |
|
816 | 816 | execution to be accessible. |
|
817 | 817 | |
|
818 | 818 | Note: we can not allow the actual FakeModule instances to be deleted, |
|
819 | 819 | because of how Python tears down modules (it hard-sets all their |
|
820 | 820 | references to None without regard for reference counts). This method |
|
821 | 821 | must therefore make a *copy* of the given namespace, to allow the |
|
822 | 822 | original module's __dict__ to be cleared and reused. |
|
823 | 823 | |
|
824 | 824 | |
|
825 | 825 | Parameters |
|
826 | 826 | ---------- |
|
827 | 827 | ns : a namespace (a dict, typically) |
|
828 | 828 | |
|
829 | 829 | fname : str |
|
830 | 830 | Filename associated with the namespace. |
|
831 | 831 | |
|
832 | 832 | Examples |
|
833 | 833 | -------- |
|
834 | 834 | |
|
835 | 835 | In [10]: import IPython |
|
836 | 836 | |
|
837 | 837 | In [11]: _ip.cache_main_mod(IPython.__dict__,IPython.__file__) |
|
838 | 838 | |
|
839 | 839 | In [12]: IPython.__file__ in _ip._main_ns_cache |
|
840 | 840 | Out[12]: True |
|
841 | 841 | """ |
|
842 | 842 | self._main_ns_cache[os.path.abspath(fname)] = ns.copy() |
|
843 | 843 | |
|
844 | 844 | def clear_main_mod_cache(self): |
|
845 | 845 | """Clear the cache of main modules. |
|
846 | 846 | |
|
847 | 847 | Mainly for use by utilities like %reset. |
|
848 | 848 | |
|
849 | 849 | Examples |
|
850 | 850 | -------- |
|
851 | 851 | |
|
852 | 852 | In [15]: import IPython |
|
853 | 853 | |
|
854 | 854 | In [16]: _ip.cache_main_mod(IPython.__dict__,IPython.__file__) |
|
855 | 855 | |
|
856 | 856 | In [17]: len(_ip._main_ns_cache) > 0 |
|
857 | 857 | Out[17]: True |
|
858 | 858 | |
|
859 | 859 | In [18]: _ip.clear_main_mod_cache() |
|
860 | 860 | |
|
861 | 861 | In [19]: len(_ip._main_ns_cache) == 0 |
|
862 | 862 | Out[19]: True |
|
863 | 863 | """ |
|
864 | 864 | self._main_ns_cache.clear() |
|
865 | 865 | |
|
866 | 866 | #------------------------------------------------------------------------- |
|
867 | 867 | # Things related to debugging |
|
868 | 868 | #------------------------------------------------------------------------- |
|
869 | 869 | |
|
870 | 870 | def init_pdb(self): |
|
871 | 871 | # Set calling of pdb on exceptions |
|
872 | 872 | # self.call_pdb is a property |
|
873 | 873 | self.call_pdb = self.pdb |
|
874 | 874 | |
|
875 | 875 | def _get_call_pdb(self): |
|
876 | 876 | return self._call_pdb |
|
877 | 877 | |
|
878 | 878 | def _set_call_pdb(self,val): |
|
879 | 879 | |
|
880 | 880 | if val not in (0,1,False,True): |
|
881 | 881 | raise ValueError,'new call_pdb value must be boolean' |
|
882 | 882 | |
|
883 | 883 | # store value in instance |
|
884 | 884 | self._call_pdb = val |
|
885 | 885 | |
|
886 | 886 | # notify the actual exception handlers |
|
887 | 887 | self.InteractiveTB.call_pdb = val |
|
888 | 888 | |
|
889 | 889 | call_pdb = property(_get_call_pdb,_set_call_pdb,None, |
|
890 | 890 | 'Control auto-activation of pdb at exceptions') |
|
891 | 891 | |
|
892 | 892 | def debugger(self,force=False): |
|
893 | 893 | """Call the pydb/pdb debugger. |
|
894 | 894 | |
|
895 | 895 | Keywords: |
|
896 | 896 | |
|
897 | 897 | - force(False): by default, this routine checks the instance call_pdb |
|
898 | 898 | flag and does not actually invoke the debugger if the flag is false. |
|
899 | 899 | The 'force' option forces the debugger to activate even if the flag |
|
900 | 900 | is false. |
|
901 | 901 | """ |
|
902 | 902 | |
|
903 | 903 | if not (force or self.call_pdb): |
|
904 | 904 | return |
|
905 | 905 | |
|
906 | 906 | if not hasattr(sys,'last_traceback'): |
|
907 | 907 | error('No traceback has been produced, nothing to debug.') |
|
908 | 908 | return |
|
909 | 909 | |
|
910 | 910 | # use pydb if available |
|
911 | 911 | if debugger.has_pydb: |
|
912 | 912 | from pydb import pm |
|
913 | 913 | else: |
|
914 | 914 | # fallback to our internal debugger |
|
915 | 915 | pm = lambda : self.InteractiveTB.debugger(force=True) |
|
916 | 916 | |
|
917 | 917 | with self.readline_no_record: |
|
918 | 918 | pm() |
|
919 | 919 | |
|
920 | 920 | #------------------------------------------------------------------------- |
|
921 | 921 | # Things related to IPython's various namespaces |
|
922 | 922 | #------------------------------------------------------------------------- |
|
923 | 923 | default_user_namespaces = True |
|
924 | 924 | |
|
925 | 925 | def init_create_namespaces(self, user_module=None, user_ns=None): |
|
926 | 926 | # Create the namespace where the user will operate. user_ns is |
|
927 | 927 | # normally the only one used, and it is passed to the exec calls as |
|
928 | 928 | # the locals argument. But we do carry a user_global_ns namespace |
|
929 | 929 | # given as the exec 'globals' argument, This is useful in embedding |
|
930 | 930 | # situations where the ipython shell opens in a context where the |
|
931 | 931 | # distinction between locals and globals is meaningful. For |
|
932 | 932 | # non-embedded contexts, it is just the same object as the user_ns dict. |
|
933 | 933 | |
|
934 | 934 | # FIXME. For some strange reason, __builtins__ is showing up at user |
|
935 | 935 | # level as a dict instead of a module. This is a manual fix, but I |
|
936 | 936 | # should really track down where the problem is coming from. Alex |
|
937 | 937 | # Schmolck reported this problem first. |
|
938 | 938 | |
|
939 | 939 | # A useful post by Alex Martelli on this topic: |
|
940 | 940 | # Re: inconsistent value from __builtins__ |
|
941 | 941 | # Von: Alex Martelli <aleaxit@yahoo.com> |
|
942 | 942 | # Datum: Freitag 01 Oktober 2004 04:45:34 nachmittags/abends |
|
943 | 943 | # Gruppen: comp.lang.python |
|
944 | 944 | |
|
945 | 945 | # Michael Hohn <hohn@hooknose.lbl.gov> wrote: |
|
946 | 946 | # > >>> print type(builtin_check.get_global_binding('__builtins__')) |
|
947 | 947 | # > <type 'dict'> |
|
948 | 948 | # > >>> print type(__builtins__) |
|
949 | 949 | # > <type 'module'> |
|
950 | 950 | # > Is this difference in return value intentional? |
|
951 | 951 | |
|
952 | 952 | # Well, it's documented that '__builtins__' can be either a dictionary |
|
953 | 953 | # or a module, and it's been that way for a long time. Whether it's |
|
954 | 954 | # intentional (or sensible), I don't know. In any case, the idea is |
|
955 | 955 | # that if you need to access the built-in namespace directly, you |
|
956 | 956 | # should start with "import __builtin__" (note, no 's') which will |
|
957 | 957 | # definitely give you a module. Yeah, it's somewhat confusing:-(. |
|
958 | 958 | |
|
959 | 959 | # These routines return a properly built module and dict as needed by |
|
960 | 960 | # the rest of the code, and can also be used by extension writers to |
|
961 | 961 | # generate properly initialized namespaces. |
|
962 | 962 | if (user_ns is not None) or (user_module is not None): |
|
963 | 963 | self.default_user_namespaces = False |
|
964 | 964 | self.user_module, self.user_ns = self.prepare_user_module(user_module, user_ns) |
|
965 | 965 | |
|
966 | 966 | # A record of hidden variables we have added to the user namespace, so |
|
967 | 967 | # we can list later only variables defined in actual interactive use. |
|
968 | 968 | self.user_ns_hidden = set() |
|
969 | 969 | |
|
970 | 970 | # Now that FakeModule produces a real module, we've run into a nasty |
|
971 | 971 | # problem: after script execution (via %run), the module where the user |
|
972 | 972 | # code ran is deleted. Now that this object is a true module (needed |
|
973 | 973 | # so docetst and other tools work correctly), the Python module |
|
974 | 974 | # teardown mechanism runs over it, and sets to None every variable |
|
975 | 975 | # present in that module. Top-level references to objects from the |
|
976 | 976 | # script survive, because the user_ns is updated with them. However, |
|
977 | 977 | # calling functions defined in the script that use other things from |
|
978 | 978 | # the script will fail, because the function's closure had references |
|
979 | 979 | # to the original objects, which are now all None. So we must protect |
|
980 | 980 | # these modules from deletion by keeping a cache. |
|
981 | 981 | # |
|
982 | 982 | # To avoid keeping stale modules around (we only need the one from the |
|
983 | 983 | # last run), we use a dict keyed with the full path to the script, so |
|
984 | 984 | # only the last version of the module is held in the cache. Note, |
|
985 | 985 | # however, that we must cache the module *namespace contents* (their |
|
986 | 986 | # __dict__). Because if we try to cache the actual modules, old ones |
|
987 | 987 | # (uncached) could be destroyed while still holding references (such as |
|
988 | 988 | # those held by GUI objects that tend to be long-lived)> |
|
989 | 989 | # |
|
990 | 990 | # The %reset command will flush this cache. See the cache_main_mod() |
|
991 | 991 | # and clear_main_mod_cache() methods for details on use. |
|
992 | 992 | |
|
993 | 993 | # This is the cache used for 'main' namespaces |
|
994 | 994 | self._main_ns_cache = {} |
|
995 | 995 | # And this is the single instance of FakeModule whose __dict__ we keep |
|
996 | 996 | # copying and clearing for reuse on each %run |
|
997 | 997 | self._user_main_module = FakeModule() |
|
998 | 998 | |
|
999 | 999 | # A table holding all the namespaces IPython deals with, so that |
|
1000 | 1000 | # introspection facilities can search easily. |
|
1001 | 1001 | self.ns_table = {'user_global':self.user_module.__dict__, |
|
1002 | 1002 | 'user_local':self.user_ns, |
|
1003 | 1003 | 'builtin':builtin_mod.__dict__ |
|
1004 | 1004 | } |
|
1005 | 1005 | |
|
1006 | 1006 | @property |
|
1007 | 1007 | def user_global_ns(self): |
|
1008 | 1008 | return self.user_module.__dict__ |
|
1009 | 1009 | |
|
1010 | 1010 | def prepare_user_module(self, user_module=None, user_ns=None): |
|
1011 | 1011 | """Prepare the module and namespace in which user code will be run. |
|
1012 | 1012 | |
|
1013 | 1013 | When IPython is started normally, both parameters are None: a new module |
|
1014 | 1014 | is created automatically, and its __dict__ used as the namespace. |
|
1015 | 1015 | |
|
1016 | 1016 | If only user_module is provided, its __dict__ is used as the namespace. |
|
1017 | 1017 | If only user_ns is provided, a dummy module is created, and user_ns |
|
1018 | 1018 | becomes the global namespace. If both are provided (as they may be |
|
1019 | 1019 | when embedding), user_ns is the local namespace, and user_module |
|
1020 | 1020 | provides the global namespace. |
|
1021 | 1021 | |
|
1022 | 1022 | Parameters |
|
1023 | 1023 | ---------- |
|
1024 | 1024 | user_module : module, optional |
|
1025 | 1025 | The current user module in which IPython is being run. If None, |
|
1026 | 1026 | a clean module will be created. |
|
1027 | 1027 | user_ns : dict, optional |
|
1028 | 1028 | A namespace in which to run interactive commands. |
|
1029 | 1029 | |
|
1030 | 1030 | Returns |
|
1031 | 1031 | ------- |
|
1032 | 1032 | A tuple of user_module and user_ns, each properly initialised. |
|
1033 | 1033 | """ |
|
1034 | 1034 | if user_module is None and user_ns is not None: |
|
1035 | 1035 | user_ns.setdefault("__name__", "__main__") |
|
1036 | 1036 | class DummyMod(object): |
|
1037 | 1037 | "A dummy module used for IPython's interactive namespace." |
|
1038 | 1038 | pass |
|
1039 | 1039 | user_module = DummyMod() |
|
1040 | 1040 | user_module.__dict__ = user_ns |
|
1041 | 1041 | |
|
1042 | 1042 | if user_module is None: |
|
1043 | 1043 | user_module = types.ModuleType("__main__", |
|
1044 | 1044 | doc="Automatically created module for IPython interactive environment") |
|
1045 | 1045 | |
|
1046 | 1046 | # We must ensure that __builtin__ (without the final 's') is always |
|
1047 | 1047 | # available and pointing to the __builtin__ *module*. For more details: |
|
1048 | 1048 | # http://mail.python.org/pipermail/python-dev/2001-April/014068.html |
|
1049 | 1049 | user_module.__dict__.setdefault('__builtin__', builtin_mod) |
|
1050 | 1050 | user_module.__dict__.setdefault('__builtins__', builtin_mod) |
|
1051 | 1051 | |
|
1052 | 1052 | if user_ns is None: |
|
1053 | 1053 | user_ns = user_module.__dict__ |
|
1054 | 1054 | |
|
1055 | 1055 | return user_module, user_ns |
|
1056 | 1056 | |
|
1057 | 1057 | def init_sys_modules(self): |
|
1058 | 1058 | # We need to insert into sys.modules something that looks like a |
|
1059 | 1059 | # module but which accesses the IPython namespace, for shelve and |
|
1060 | 1060 | # pickle to work interactively. Normally they rely on getting |
|
1061 | 1061 | # everything out of __main__, but for embedding purposes each IPython |
|
1062 | 1062 | # instance has its own private namespace, so we can't go shoving |
|
1063 | 1063 | # everything into __main__. |
|
1064 | 1064 | |
|
1065 | 1065 | # note, however, that we should only do this for non-embedded |
|
1066 | 1066 | # ipythons, which really mimic the __main__.__dict__ with their own |
|
1067 | 1067 | # namespace. Embedded instances, on the other hand, should not do |
|
1068 | 1068 | # this because they need to manage the user local/global namespaces |
|
1069 | 1069 | # only, but they live within a 'normal' __main__ (meaning, they |
|
1070 | 1070 | # shouldn't overtake the execution environment of the script they're |
|
1071 | 1071 | # embedded in). |
|
1072 | 1072 | |
|
1073 | 1073 | # This is overridden in the InteractiveShellEmbed subclass to a no-op. |
|
1074 | 1074 | main_name = self.user_module.__name__ |
|
1075 | 1075 | sys.modules[main_name] = self.user_module |
|
1076 | 1076 | |
|
1077 | 1077 | def init_user_ns(self): |
|
1078 | 1078 | """Initialize all user-visible namespaces to their minimum defaults. |
|
1079 | 1079 | |
|
1080 | 1080 | Certain history lists are also initialized here, as they effectively |
|
1081 | 1081 | act as user namespaces. |
|
1082 | 1082 | |
|
1083 | 1083 | Notes |
|
1084 | 1084 | ----- |
|
1085 | 1085 | All data structures here are only filled in, they are NOT reset by this |
|
1086 | 1086 | method. If they were not empty before, data will simply be added to |
|
1087 | 1087 | therm. |
|
1088 | 1088 | """ |
|
1089 | 1089 | # This function works in two parts: first we put a few things in |
|
1090 | 1090 | # user_ns, and we sync that contents into user_ns_hidden so that these |
|
1091 | 1091 | # initial variables aren't shown by %who. After the sync, we add the |
|
1092 | 1092 | # rest of what we *do* want the user to see with %who even on a new |
|
1093 | 1093 | # session (probably nothing, so theye really only see their own stuff) |
|
1094 | 1094 | |
|
1095 | 1095 | # The user dict must *always* have a __builtin__ reference to the |
|
1096 | 1096 | # Python standard __builtin__ namespace, which must be imported. |
|
1097 | 1097 | # This is so that certain operations in prompt evaluation can be |
|
1098 | 1098 | # reliably executed with builtins. Note that we can NOT use |
|
1099 | 1099 | # __builtins__ (note the 's'), because that can either be a dict or a |
|
1100 | 1100 | # module, and can even mutate at runtime, depending on the context |
|
1101 | 1101 | # (Python makes no guarantees on it). In contrast, __builtin__ is |
|
1102 | 1102 | # always a module object, though it must be explicitly imported. |
|
1103 | 1103 | |
|
1104 | 1104 | # For more details: |
|
1105 | 1105 | # http://mail.python.org/pipermail/python-dev/2001-April/014068.html |
|
1106 | 1106 | ns = dict() |
|
1107 | 1107 | |
|
1108 | 1108 | # Put 'help' in the user namespace |
|
1109 | 1109 | try: |
|
1110 | 1110 | from site import _Helper |
|
1111 | 1111 | ns['help'] = _Helper() |
|
1112 | 1112 | except ImportError: |
|
1113 | 1113 | warn('help() not available - check site.py') |
|
1114 | 1114 | |
|
1115 | 1115 | # make global variables for user access to the histories |
|
1116 | 1116 | ns['_ih'] = self.history_manager.input_hist_parsed |
|
1117 | 1117 | ns['_oh'] = self.history_manager.output_hist |
|
1118 | 1118 | ns['_dh'] = self.history_manager.dir_hist |
|
1119 | 1119 | |
|
1120 | 1120 | ns['_sh'] = shadowns |
|
1121 | 1121 | |
|
1122 | 1122 | # user aliases to input and output histories. These shouldn't show up |
|
1123 | 1123 | # in %who, as they can have very large reprs. |
|
1124 | 1124 | ns['In'] = self.history_manager.input_hist_parsed |
|
1125 | 1125 | ns['Out'] = self.history_manager.output_hist |
|
1126 | 1126 | |
|
1127 | 1127 | # Store myself as the public api!!! |
|
1128 | 1128 | ns['get_ipython'] = self.get_ipython |
|
1129 | 1129 | |
|
1130 | 1130 | ns['exit'] = self.exiter |
|
1131 | 1131 | ns['quit'] = self.exiter |
|
1132 | 1132 | |
|
1133 | 1133 | # Sync what we've added so far to user_ns_hidden so these aren't seen |
|
1134 | 1134 | # by %who |
|
1135 | 1135 | self.user_ns_hidden.update(ns) |
|
1136 | 1136 | |
|
1137 | 1137 | # Anything put into ns now would show up in %who. Think twice before |
|
1138 | 1138 | # putting anything here, as we really want %who to show the user their |
|
1139 | 1139 | # stuff, not our variables. |
|
1140 | 1140 | |
|
1141 | 1141 | # Finally, update the real user's namespace |
|
1142 | 1142 | self.user_ns.update(ns) |
|
1143 | 1143 | |
|
1144 | 1144 | @property |
|
1145 | 1145 | def all_ns_refs(self): |
|
1146 | 1146 | """Get a list of references to all the namespace dictionaries in which |
|
1147 | 1147 | IPython might store a user-created object. |
|
1148 | 1148 | |
|
1149 | 1149 | Note that this does not include the displayhook, which also caches |
|
1150 | 1150 | objects from the output.""" |
|
1151 | 1151 | return [self.user_ns, self.user_global_ns, |
|
1152 | 1152 | self._user_main_module.__dict__] + self._main_ns_cache.values() |
|
1153 | 1153 | |
|
1154 | 1154 | def reset(self, new_session=True): |
|
1155 | 1155 | """Clear all internal namespaces, and attempt to release references to |
|
1156 | 1156 | user objects. |
|
1157 | 1157 | |
|
1158 | 1158 | If new_session is True, a new history session will be opened. |
|
1159 | 1159 | """ |
|
1160 | 1160 | # Clear histories |
|
1161 | 1161 | self.history_manager.reset(new_session) |
|
1162 | 1162 | # Reset counter used to index all histories |
|
1163 | 1163 | if new_session: |
|
1164 | 1164 | self.execution_count = 1 |
|
1165 | 1165 | |
|
1166 | 1166 | # Flush cached output items |
|
1167 | 1167 | if self.displayhook.do_full_cache: |
|
1168 | 1168 | self.displayhook.flush() |
|
1169 | 1169 | |
|
1170 | 1170 | # The main execution namespaces must be cleared very carefully, |
|
1171 | 1171 | # skipping the deletion of the builtin-related keys, because doing so |
|
1172 | 1172 | # would cause errors in many object's __del__ methods. |
|
1173 | 1173 | if self.user_ns is not self.user_global_ns: |
|
1174 | 1174 | self.user_ns.clear() |
|
1175 | 1175 | ns = self.user_global_ns |
|
1176 | 1176 | drop_keys = set(ns.keys()) |
|
1177 | 1177 | drop_keys.discard('__builtin__') |
|
1178 | 1178 | drop_keys.discard('__builtins__') |
|
1179 | 1179 | drop_keys.discard('__name__') |
|
1180 | 1180 | for k in drop_keys: |
|
1181 | 1181 | del ns[k] |
|
1182 | 1182 | |
|
1183 | 1183 | self.user_ns_hidden.clear() |
|
1184 | 1184 | |
|
1185 | 1185 | # Restore the user namespaces to minimal usability |
|
1186 | 1186 | self.init_user_ns() |
|
1187 | 1187 | |
|
1188 | 1188 | # Restore the default and user aliases |
|
1189 | 1189 | self.alias_manager.clear_aliases() |
|
1190 | 1190 | self.alias_manager.init_aliases() |
|
1191 | 1191 | |
|
1192 | 1192 | # Flush the private list of module references kept for script |
|
1193 | 1193 | # execution protection |
|
1194 | 1194 | self.clear_main_mod_cache() |
|
1195 | 1195 | |
|
1196 | 1196 | # Clear out the namespace from the last %run |
|
1197 | 1197 | self.new_main_mod() |
|
1198 | 1198 | |
|
1199 | 1199 | def del_var(self, varname, by_name=False): |
|
1200 | 1200 | """Delete a variable from the various namespaces, so that, as |
|
1201 | 1201 | far as possible, we're not keeping any hidden references to it. |
|
1202 | 1202 | |
|
1203 | 1203 | Parameters |
|
1204 | 1204 | ---------- |
|
1205 | 1205 | varname : str |
|
1206 | 1206 | The name of the variable to delete. |
|
1207 | 1207 | by_name : bool |
|
1208 | 1208 | If True, delete variables with the given name in each |
|
1209 | 1209 | namespace. If False (default), find the variable in the user |
|
1210 | 1210 | namespace, and delete references to it. |
|
1211 | 1211 | """ |
|
1212 | 1212 | if varname in ('__builtin__', '__builtins__'): |
|
1213 | 1213 | raise ValueError("Refusing to delete %s" % varname) |
|
1214 | 1214 | |
|
1215 | 1215 | ns_refs = self.all_ns_refs |
|
1216 | 1216 | |
|
1217 | 1217 | if by_name: # Delete by name |
|
1218 | 1218 | for ns in ns_refs: |
|
1219 | 1219 | try: |
|
1220 | 1220 | del ns[varname] |
|
1221 | 1221 | except KeyError: |
|
1222 | 1222 | pass |
|
1223 | 1223 | else: # Delete by object |
|
1224 | 1224 | try: |
|
1225 | 1225 | obj = self.user_ns[varname] |
|
1226 | 1226 | except KeyError: |
|
1227 | 1227 | raise NameError("name '%s' is not defined" % varname) |
|
1228 | 1228 | # Also check in output history |
|
1229 | 1229 | ns_refs.append(self.history_manager.output_hist) |
|
1230 | 1230 | for ns in ns_refs: |
|
1231 | 1231 | to_delete = [n for n, o in ns.iteritems() if o is obj] |
|
1232 | 1232 | for name in to_delete: |
|
1233 | 1233 | del ns[name] |
|
1234 | 1234 | |
|
1235 | 1235 | # displayhook keeps extra references, but not in a dictionary |
|
1236 | 1236 | for name in ('_', '__', '___'): |
|
1237 | 1237 | if getattr(self.displayhook, name) is obj: |
|
1238 | 1238 | setattr(self.displayhook, name, None) |
|
1239 | 1239 | |
|
1240 | 1240 | def reset_selective(self, regex=None): |
|
1241 | 1241 | """Clear selective variables from internal namespaces based on a |
|
1242 | 1242 | specified regular expression. |
|
1243 | 1243 | |
|
1244 | 1244 | Parameters |
|
1245 | 1245 | ---------- |
|
1246 | 1246 | regex : string or compiled pattern, optional |
|
1247 | 1247 | A regular expression pattern that will be used in searching |
|
1248 | 1248 | variable names in the users namespaces. |
|
1249 | 1249 | """ |
|
1250 | 1250 | if regex is not None: |
|
1251 | 1251 | try: |
|
1252 | 1252 | m = re.compile(regex) |
|
1253 | 1253 | except TypeError: |
|
1254 | 1254 | raise TypeError('regex must be a string or compiled pattern') |
|
1255 | 1255 | # Search for keys in each namespace that match the given regex |
|
1256 | 1256 | # If a match is found, delete the key/value pair. |
|
1257 | 1257 | for ns in self.all_ns_refs: |
|
1258 | 1258 | for var in ns: |
|
1259 | 1259 | if m.search(var): |
|
1260 | 1260 | del ns[var] |
|
1261 | 1261 | |
|
1262 | 1262 | def push(self, variables, interactive=True): |
|
1263 | 1263 | """Inject a group of variables into the IPython user namespace. |
|
1264 | 1264 | |
|
1265 | 1265 | Parameters |
|
1266 | 1266 | ---------- |
|
1267 | 1267 | variables : dict, str or list/tuple of str |
|
1268 | 1268 | The variables to inject into the user's namespace. If a dict, a |
|
1269 | 1269 | simple update is done. If a str, the string is assumed to have |
|
1270 | 1270 | variable names separated by spaces. A list/tuple of str can also |
|
1271 | 1271 | be used to give the variable names. If just the variable names are |
|
1272 | 1272 | give (list/tuple/str) then the variable values looked up in the |
|
1273 | 1273 | callers frame. |
|
1274 | 1274 | interactive : bool |
|
1275 | 1275 | If True (default), the variables will be listed with the ``who`` |
|
1276 | 1276 | magic. |
|
1277 | 1277 | """ |
|
1278 | 1278 | vdict = None |
|
1279 | 1279 | |
|
1280 | 1280 | # We need a dict of name/value pairs to do namespace updates. |
|
1281 | 1281 | if isinstance(variables, dict): |
|
1282 | 1282 | vdict = variables |
|
1283 | 1283 | elif isinstance(variables, (basestring, list, tuple)): |
|
1284 | 1284 | if isinstance(variables, basestring): |
|
1285 | 1285 | vlist = variables.split() |
|
1286 | 1286 | else: |
|
1287 | 1287 | vlist = variables |
|
1288 | 1288 | vdict = {} |
|
1289 | 1289 | cf = sys._getframe(1) |
|
1290 | 1290 | for name in vlist: |
|
1291 | 1291 | try: |
|
1292 | 1292 | vdict[name] = eval(name, cf.f_globals, cf.f_locals) |
|
1293 | 1293 | except: |
|
1294 | 1294 | print ('Could not get variable %s from %s' % |
|
1295 | 1295 | (name,cf.f_code.co_name)) |
|
1296 | 1296 | else: |
|
1297 | 1297 | raise ValueError('variables must be a dict/str/list/tuple') |
|
1298 | 1298 | |
|
1299 | 1299 | # Propagate variables to user namespace |
|
1300 | 1300 | self.user_ns.update(vdict) |
|
1301 | 1301 | |
|
1302 | 1302 | # And configure interactive visibility |
|
1303 | 1303 | user_ns_hidden = self.user_ns_hidden |
|
1304 | 1304 | if interactive: |
|
1305 | 1305 | user_ns_hidden.difference_update(vdict) |
|
1306 | 1306 | else: |
|
1307 | 1307 | user_ns_hidden.update(vdict) |
|
1308 | 1308 | |
|
1309 | 1309 | def drop_by_id(self, variables): |
|
1310 | 1310 | """Remove a dict of variables from the user namespace, if they are the |
|
1311 | 1311 | same as the values in the dictionary. |
|
1312 | 1312 | |
|
1313 | 1313 | This is intended for use by extensions: variables that they've added can |
|
1314 | 1314 | be taken back out if they are unloaded, without removing any that the |
|
1315 | 1315 | user has overwritten. |
|
1316 | 1316 | |
|
1317 | 1317 | Parameters |
|
1318 | 1318 | ---------- |
|
1319 | 1319 | variables : dict |
|
1320 | 1320 | A dictionary mapping object names (as strings) to the objects. |
|
1321 | 1321 | """ |
|
1322 | 1322 | for name, obj in variables.iteritems(): |
|
1323 | 1323 | if name in self.user_ns and self.user_ns[name] is obj: |
|
1324 | 1324 | del self.user_ns[name] |
|
1325 | 1325 | self.user_ns_hidden.discard(name) |
|
1326 | 1326 | |
|
1327 | 1327 | #------------------------------------------------------------------------- |
|
1328 | 1328 | # Things related to object introspection |
|
1329 | 1329 | #------------------------------------------------------------------------- |
|
1330 | 1330 | |
|
1331 | 1331 | def _ofind(self, oname, namespaces=None): |
|
1332 | 1332 | """Find an object in the available namespaces. |
|
1333 | 1333 | |
|
1334 | 1334 | self._ofind(oname) -> dict with keys: found,obj,ospace,ismagic |
|
1335 | 1335 | |
|
1336 | 1336 | Has special code to detect magic functions. |
|
1337 | 1337 | """ |
|
1338 | 1338 | oname = oname.strip() |
|
1339 | 1339 | #print '1- oname: <%r>' % oname # dbg |
|
1340 | 1340 | if not py3compat.isidentifier(oname.lstrip(ESC_MAGIC), dotted=True): |
|
1341 | 1341 | return dict(found=False) |
|
1342 | 1342 | |
|
1343 | 1343 | alias_ns = None |
|
1344 | 1344 | if namespaces is None: |
|
1345 | 1345 | # Namespaces to search in: |
|
1346 | 1346 | # Put them in a list. The order is important so that we |
|
1347 | 1347 | # find things in the same order that Python finds them. |
|
1348 | 1348 | namespaces = [ ('Interactive', self.user_ns), |
|
1349 | 1349 | ('Interactive (global)', self.user_global_ns), |
|
1350 | 1350 | ('Python builtin', builtin_mod.__dict__), |
|
1351 | 1351 | ('Alias', self.alias_manager.alias_table), |
|
1352 | 1352 | ] |
|
1353 | 1353 | alias_ns = self.alias_manager.alias_table |
|
1354 | 1354 | |
|
1355 | 1355 | # initialize results to 'null' |
|
1356 | 1356 | found = False; obj = None; ospace = None; ds = None; |
|
1357 | 1357 | ismagic = False; isalias = False; parent = None |
|
1358 | 1358 | |
|
1359 | 1359 | # We need to special-case 'print', which as of python2.6 registers as a |
|
1360 | 1360 | # function but should only be treated as one if print_function was |
|
1361 | 1361 | # loaded with a future import. In this case, just bail. |
|
1362 | 1362 | if (oname == 'print' and not py3compat.PY3 and not \ |
|
1363 | 1363 | (self.compile.compiler_flags & __future__.CO_FUTURE_PRINT_FUNCTION)): |
|
1364 | 1364 | return {'found':found, 'obj':obj, 'namespace':ospace, |
|
1365 | 1365 | 'ismagic':ismagic, 'isalias':isalias, 'parent':parent} |
|
1366 | 1366 | |
|
1367 | 1367 | # Look for the given name by splitting it in parts. If the head is |
|
1368 | 1368 | # found, then we look for all the remaining parts as members, and only |
|
1369 | 1369 | # declare success if we can find them all. |
|
1370 | 1370 | oname_parts = oname.split('.') |
|
1371 | 1371 | oname_head, oname_rest = oname_parts[0],oname_parts[1:] |
|
1372 | 1372 | for nsname,ns in namespaces: |
|
1373 | 1373 | try: |
|
1374 | 1374 | obj = ns[oname_head] |
|
1375 | 1375 | except KeyError: |
|
1376 | 1376 | continue |
|
1377 | 1377 | else: |
|
1378 | 1378 | #print 'oname_rest:', oname_rest # dbg |
|
1379 | 1379 | for part in oname_rest: |
|
1380 | 1380 | try: |
|
1381 | 1381 | parent = obj |
|
1382 | 1382 | obj = getattr(obj,part) |
|
1383 | 1383 | except: |
|
1384 | 1384 | # Blanket except b/c some badly implemented objects |
|
1385 | 1385 | # allow __getattr__ to raise exceptions other than |
|
1386 | 1386 | # AttributeError, which then crashes IPython. |
|
1387 | 1387 | break |
|
1388 | 1388 | else: |
|
1389 | 1389 | # If we finish the for loop (no break), we got all members |
|
1390 | 1390 | found = True |
|
1391 | 1391 | ospace = nsname |
|
1392 | 1392 | if ns == alias_ns: |
|
1393 | 1393 | isalias = True |
|
1394 | 1394 | break # namespace loop |
|
1395 | 1395 | |
|
1396 | 1396 | # Try to see if it's magic |
|
1397 | 1397 | if not found: |
|
1398 | 1398 | if oname.startswith(ESC_MAGIC): |
|
1399 | 1399 | oname = oname[1:] |
|
1400 | 1400 | obj = self.find_magic(oname) |
|
1401 | 1401 | if obj is not None: |
|
1402 | 1402 | found = True |
|
1403 | 1403 | ospace = 'IPython internal' |
|
1404 | 1404 | ismagic = True |
|
1405 | 1405 | |
|
1406 | 1406 | # Last try: special-case some literals like '', [], {}, etc: |
|
1407 | 1407 | if not found and oname_head in ["''",'""','[]','{}','()']: |
|
1408 | 1408 | obj = eval(oname_head) |
|
1409 | 1409 | found = True |
|
1410 | 1410 | ospace = 'Interactive' |
|
1411 | 1411 | |
|
1412 | 1412 | return {'found':found, 'obj':obj, 'namespace':ospace, |
|
1413 | 1413 | 'ismagic':ismagic, 'isalias':isalias, 'parent':parent} |
|
1414 | 1414 | |
|
1415 | 1415 | def _ofind_property(self, oname, info): |
|
1416 | 1416 | """Second part of object finding, to look for property details.""" |
|
1417 | 1417 | if info.found: |
|
1418 | 1418 | # Get the docstring of the class property if it exists. |
|
1419 | 1419 | path = oname.split('.') |
|
1420 | 1420 | root = '.'.join(path[:-1]) |
|
1421 | 1421 | if info.parent is not None: |
|
1422 | 1422 | try: |
|
1423 | 1423 | target = getattr(info.parent, '__class__') |
|
1424 | 1424 | # The object belongs to a class instance. |
|
1425 | 1425 | try: |
|
1426 | 1426 | target = getattr(target, path[-1]) |
|
1427 | 1427 | # The class defines the object. |
|
1428 | 1428 | if isinstance(target, property): |
|
1429 | 1429 | oname = root + '.__class__.' + path[-1] |
|
1430 | 1430 | info = Struct(self._ofind(oname)) |
|
1431 | 1431 | except AttributeError: pass |
|
1432 | 1432 | except AttributeError: pass |
|
1433 | 1433 | |
|
1434 | 1434 | # We return either the new info or the unmodified input if the object |
|
1435 | 1435 | # hadn't been found |
|
1436 | 1436 | return info |
|
1437 | 1437 | |
|
1438 | 1438 | def _object_find(self, oname, namespaces=None): |
|
1439 | 1439 | """Find an object and return a struct with info about it.""" |
|
1440 | 1440 | inf = Struct(self._ofind(oname, namespaces)) |
|
1441 | 1441 | return Struct(self._ofind_property(oname, inf)) |
|
1442 | 1442 | |
|
1443 | 1443 | def _inspect(self, meth, oname, namespaces=None, **kw): |
|
1444 | 1444 | """Generic interface to the inspector system. |
|
1445 | 1445 | |
|
1446 | 1446 | This function is meant to be called by pdef, pdoc & friends.""" |
|
1447 | 1447 | info = self._object_find(oname) |
|
1448 | 1448 | if info.found: |
|
1449 | 1449 | pmethod = getattr(self.inspector, meth) |
|
1450 | 1450 | formatter = format_screen if info.ismagic else None |
|
1451 | 1451 | if meth == 'pdoc': |
|
1452 | 1452 | pmethod(info.obj, oname, formatter) |
|
1453 | 1453 | elif meth == 'pinfo': |
|
1454 | 1454 | pmethod(info.obj, oname, formatter, info, **kw) |
|
1455 | 1455 | else: |
|
1456 | 1456 | pmethod(info.obj, oname) |
|
1457 | 1457 | else: |
|
1458 | 1458 | print 'Object `%s` not found.' % oname |
|
1459 | 1459 | return 'not found' # so callers can take other action |
|
1460 | 1460 | |
|
1461 | 1461 | def object_inspect(self, oname, detail_level=0): |
|
1462 | 1462 | with self.builtin_trap: |
|
1463 | 1463 | info = self._object_find(oname) |
|
1464 | 1464 | if info.found: |
|
1465 | 1465 | return self.inspector.info(info.obj, oname, info=info, |
|
1466 | 1466 | detail_level=detail_level |
|
1467 | 1467 | ) |
|
1468 | 1468 | else: |
|
1469 | 1469 | return oinspect.object_info(name=oname, found=False) |
|
1470 | 1470 | |
|
1471 | 1471 | #------------------------------------------------------------------------- |
|
1472 | 1472 | # Things related to history management |
|
1473 | 1473 | #------------------------------------------------------------------------- |
|
1474 | 1474 | |
|
1475 | 1475 | def init_history(self): |
|
1476 | 1476 | """Sets up the command history, and starts regular autosaves.""" |
|
1477 | 1477 | self.history_manager = HistoryManager(shell=self, config=self.config) |
|
1478 | 1478 | self.configurables.append(self.history_manager) |
|
1479 | 1479 | |
|
1480 | 1480 | #------------------------------------------------------------------------- |
|
1481 | 1481 | # Things related to exception handling and tracebacks (not debugging) |
|
1482 | 1482 | #------------------------------------------------------------------------- |
|
1483 | 1483 | |
|
1484 | 1484 | def init_traceback_handlers(self, custom_exceptions): |
|
1485 | 1485 | # Syntax error handler. |
|
1486 | 1486 | self.SyntaxTB = ultratb.SyntaxTB(color_scheme='NoColor') |
|
1487 | 1487 | |
|
1488 | 1488 | # The interactive one is initialized with an offset, meaning we always |
|
1489 | 1489 | # want to remove the topmost item in the traceback, which is our own |
|
1490 | 1490 | # internal code. Valid modes: ['Plain','Context','Verbose'] |
|
1491 | 1491 | self.InteractiveTB = ultratb.AutoFormattedTB(mode = 'Plain', |
|
1492 | 1492 | color_scheme='NoColor', |
|
1493 | 1493 | tb_offset = 1, |
|
1494 | 1494 | check_cache=self.compile.check_cache) |
|
1495 | 1495 | |
|
1496 | 1496 | # The instance will store a pointer to the system-wide exception hook, |
|
1497 | 1497 | # so that runtime code (such as magics) can access it. This is because |
|
1498 | 1498 | # during the read-eval loop, it may get temporarily overwritten. |
|
1499 | 1499 | self.sys_excepthook = sys.excepthook |
|
1500 | 1500 | |
|
1501 | 1501 | # and add any custom exception handlers the user may have specified |
|
1502 | 1502 | self.set_custom_exc(*custom_exceptions) |
|
1503 | 1503 | |
|
1504 | 1504 | # Set the exception mode |
|
1505 | 1505 | self.InteractiveTB.set_mode(mode=self.xmode) |
|
1506 | 1506 | |
|
1507 | 1507 | def set_custom_exc(self, exc_tuple, handler): |
|
1508 | 1508 | """set_custom_exc(exc_tuple,handler) |
|
1509 | 1509 | |
|
1510 | 1510 | Set a custom exception handler, which will be called if any of the |
|
1511 | 1511 | exceptions in exc_tuple occur in the mainloop (specifically, in the |
|
1512 | 1512 | run_code() method). |
|
1513 | 1513 | |
|
1514 | 1514 | Parameters |
|
1515 | 1515 | ---------- |
|
1516 | 1516 | |
|
1517 | 1517 | exc_tuple : tuple of exception classes |
|
1518 | 1518 | A *tuple* of exception classes, for which to call the defined |
|
1519 | 1519 | handler. It is very important that you use a tuple, and NOT A |
|
1520 | 1520 | LIST here, because of the way Python's except statement works. If |
|
1521 | 1521 | you only want to trap a single exception, use a singleton tuple:: |
|
1522 | 1522 | |
|
1523 | 1523 | exc_tuple == (MyCustomException,) |
|
1524 | 1524 | |
|
1525 | 1525 | handler : callable |
|
1526 | 1526 | handler must have the following signature:: |
|
1527 | 1527 | |
|
1528 | 1528 | def my_handler(self, etype, value, tb, tb_offset=None): |
|
1529 | 1529 | ... |
|
1530 | 1530 | return structured_traceback |
|
1531 | 1531 | |
|
1532 | 1532 | Your handler must return a structured traceback (a list of strings), |
|
1533 | 1533 | or None. |
|
1534 | 1534 | |
|
1535 | 1535 | This will be made into an instance method (via types.MethodType) |
|
1536 | 1536 | of IPython itself, and it will be called if any of the exceptions |
|
1537 | 1537 | listed in the exc_tuple are caught. If the handler is None, an |
|
1538 | 1538 | internal basic one is used, which just prints basic info. |
|
1539 | 1539 | |
|
1540 | 1540 | To protect IPython from crashes, if your handler ever raises an |
|
1541 | 1541 | exception or returns an invalid result, it will be immediately |
|
1542 | 1542 | disabled. |
|
1543 | 1543 | |
|
1544 | 1544 | WARNING: by putting in your own exception handler into IPython's main |
|
1545 | 1545 | execution loop, you run a very good chance of nasty crashes. This |
|
1546 | 1546 | facility should only be used if you really know what you are doing.""" |
|
1547 | 1547 | |
|
1548 | 1548 | assert type(exc_tuple)==type(()) , \ |
|
1549 | 1549 | "The custom exceptions must be given AS A TUPLE." |
|
1550 | 1550 | |
|
1551 | 1551 | def dummy_handler(self,etype,value,tb,tb_offset=None): |
|
1552 | 1552 | print '*** Simple custom exception handler ***' |
|
1553 | 1553 | print 'Exception type :',etype |
|
1554 | 1554 | print 'Exception value:',value |
|
1555 | 1555 | print 'Traceback :',tb |
|
1556 | 1556 | #print 'Source code :','\n'.join(self.buffer) |
|
1557 | 1557 | |
|
1558 | 1558 | def validate_stb(stb): |
|
1559 | 1559 | """validate structured traceback return type |
|
1560 | 1560 | |
|
1561 | 1561 | return type of CustomTB *should* be a list of strings, but allow |
|
1562 | 1562 | single strings or None, which are harmless. |
|
1563 | 1563 | |
|
1564 | 1564 | This function will *always* return a list of strings, |
|
1565 | 1565 | and will raise a TypeError if stb is inappropriate. |
|
1566 | 1566 | """ |
|
1567 | 1567 | msg = "CustomTB must return list of strings, not %r" % stb |
|
1568 | 1568 | if stb is None: |
|
1569 | 1569 | return [] |
|
1570 | 1570 | elif isinstance(stb, basestring): |
|
1571 | 1571 | return [stb] |
|
1572 | 1572 | elif not isinstance(stb, list): |
|
1573 | 1573 | raise TypeError(msg) |
|
1574 | 1574 | # it's a list |
|
1575 | 1575 | for line in stb: |
|
1576 | 1576 | # check every element |
|
1577 | 1577 | if not isinstance(line, basestring): |
|
1578 | 1578 | raise TypeError(msg) |
|
1579 | 1579 | return stb |
|
1580 | 1580 | |
|
1581 | 1581 | if handler is None: |
|
1582 | 1582 | wrapped = dummy_handler |
|
1583 | 1583 | else: |
|
1584 | 1584 | def wrapped(self,etype,value,tb,tb_offset=None): |
|
1585 | 1585 | """wrap CustomTB handler, to protect IPython from user code |
|
1586 | 1586 | |
|
1587 | 1587 | This makes it harder (but not impossible) for custom exception |
|
1588 | 1588 | handlers to crash IPython. |
|
1589 | 1589 | """ |
|
1590 | 1590 | try: |
|
1591 | 1591 | stb = handler(self,etype,value,tb,tb_offset=tb_offset) |
|
1592 | 1592 | return validate_stb(stb) |
|
1593 | 1593 | except: |
|
1594 | 1594 | # clear custom handler immediately |
|
1595 | 1595 | self.set_custom_exc((), None) |
|
1596 | 1596 | print >> io.stderr, "Custom TB Handler failed, unregistering" |
|
1597 | 1597 | # show the exception in handler first |
|
1598 | 1598 | stb = self.InteractiveTB.structured_traceback(*sys.exc_info()) |
|
1599 | 1599 | print >> io.stdout, self.InteractiveTB.stb2text(stb) |
|
1600 | 1600 | print >> io.stdout, "The original exception:" |
|
1601 | 1601 | stb = self.InteractiveTB.structured_traceback( |
|
1602 | 1602 | (etype,value,tb), tb_offset=tb_offset |
|
1603 | 1603 | ) |
|
1604 | 1604 | return stb |
|
1605 | 1605 | |
|
1606 | 1606 | self.CustomTB = types.MethodType(wrapped,self) |
|
1607 | 1607 | self.custom_exceptions = exc_tuple |
|
1608 | 1608 | |
|
1609 | 1609 | def excepthook(self, etype, value, tb): |
|
1610 | 1610 | """One more defense for GUI apps that call sys.excepthook. |
|
1611 | 1611 | |
|
1612 | 1612 | GUI frameworks like wxPython trap exceptions and call |
|
1613 | 1613 | sys.excepthook themselves. I guess this is a feature that |
|
1614 | 1614 | enables them to keep running after exceptions that would |
|
1615 | 1615 | otherwise kill their mainloop. This is a bother for IPython |
|
1616 | 1616 | which excepts to catch all of the program exceptions with a try: |
|
1617 | 1617 | except: statement. |
|
1618 | 1618 | |
|
1619 | 1619 | Normally, IPython sets sys.excepthook to a CrashHandler instance, so if |
|
1620 | 1620 | any app directly invokes sys.excepthook, it will look to the user like |
|
1621 | 1621 | IPython crashed. In order to work around this, we can disable the |
|
1622 | 1622 | CrashHandler and replace it with this excepthook instead, which prints a |
|
1623 | 1623 | regular traceback using our InteractiveTB. In this fashion, apps which |
|
1624 | 1624 | call sys.excepthook will generate a regular-looking exception from |
|
1625 | 1625 | IPython, and the CrashHandler will only be triggered by real IPython |
|
1626 | 1626 | crashes. |
|
1627 | 1627 | |
|
1628 | 1628 | This hook should be used sparingly, only in places which are not likely |
|
1629 | 1629 | to be true IPython errors. |
|
1630 | 1630 | """ |
|
1631 | 1631 | self.showtraceback((etype,value,tb),tb_offset=0) |
|
1632 | 1632 | |
|
1633 | 1633 | def _get_exc_info(self, exc_tuple=None): |
|
1634 | 1634 | """get exc_info from a given tuple, sys.exc_info() or sys.last_type etc. |
|
1635 | 1635 | |
|
1636 | 1636 | Ensures sys.last_type,value,traceback hold the exc_info we found, |
|
1637 | 1637 | from whichever source. |
|
1638 | 1638 | |
|
1639 | 1639 | raises ValueError if none of these contain any information |
|
1640 | 1640 | """ |
|
1641 | 1641 | if exc_tuple is None: |
|
1642 | 1642 | etype, value, tb = sys.exc_info() |
|
1643 | 1643 | else: |
|
1644 | 1644 | etype, value, tb = exc_tuple |
|
1645 | 1645 | |
|
1646 | 1646 | if etype is None: |
|
1647 | 1647 | if hasattr(sys, 'last_type'): |
|
1648 | 1648 | etype, value, tb = sys.last_type, sys.last_value, \ |
|
1649 | 1649 | sys.last_traceback |
|
1650 | 1650 | |
|
1651 | 1651 | if etype is None: |
|
1652 | 1652 | raise ValueError("No exception to find") |
|
1653 | 1653 | |
|
1654 | 1654 | # Now store the exception info in sys.last_type etc. |
|
1655 | 1655 | # WARNING: these variables are somewhat deprecated and not |
|
1656 | 1656 | # necessarily safe to use in a threaded environment, but tools |
|
1657 | 1657 | # like pdb depend on their existence, so let's set them. If we |
|
1658 | 1658 | # find problems in the field, we'll need to revisit their use. |
|
1659 | 1659 | sys.last_type = etype |
|
1660 | 1660 | sys.last_value = value |
|
1661 | 1661 | sys.last_traceback = tb |
|
1662 | 1662 | |
|
1663 | 1663 | return etype, value, tb |
|
1664 | 1664 | |
|
1665 | 1665 | |
|
1666 | 1666 | def showtraceback(self,exc_tuple = None,filename=None,tb_offset=None, |
|
1667 | 1667 | exception_only=False): |
|
1668 | 1668 | """Display the exception that just occurred. |
|
1669 | 1669 | |
|
1670 | 1670 | If nothing is known about the exception, this is the method which |
|
1671 | 1671 | should be used throughout the code for presenting user tracebacks, |
|
1672 | 1672 | rather than directly invoking the InteractiveTB object. |
|
1673 | 1673 | |
|
1674 | 1674 | A specific showsyntaxerror() also exists, but this method can take |
|
1675 | 1675 | care of calling it if needed, so unless you are explicitly catching a |
|
1676 | 1676 | SyntaxError exception, don't try to analyze the stack manually and |
|
1677 | 1677 | simply call this method.""" |
|
1678 | 1678 | |
|
1679 | 1679 | try: |
|
1680 | 1680 | try: |
|
1681 | 1681 | etype, value, tb = self._get_exc_info(exc_tuple) |
|
1682 | 1682 | except ValueError: |
|
1683 | 1683 | self.write_err('No traceback available to show.\n') |
|
1684 | 1684 | return |
|
1685 | 1685 | |
|
1686 | 1686 | if etype is SyntaxError: |
|
1687 | 1687 | # Though this won't be called by syntax errors in the input |
|
1688 | 1688 | # line, there may be SyntaxError cases with imported code. |
|
1689 | 1689 | self.showsyntaxerror(filename) |
|
1690 | 1690 | elif etype is UsageError: |
|
1691 | 1691 | self.write_err("UsageError: %s" % value) |
|
1692 | 1692 | else: |
|
1693 | 1693 | if etype in self.custom_exceptions: |
|
1694 | 1694 | stb = self.CustomTB(etype, value, tb, tb_offset) |
|
1695 | 1695 | else: |
|
1696 | 1696 | if exception_only: |
|
1697 | 1697 | stb = ['An exception has occurred, use %tb to see ' |
|
1698 | 1698 | 'the full traceback.\n'] |
|
1699 | 1699 | stb.extend(self.InteractiveTB.get_exception_only(etype, |
|
1700 | 1700 | value)) |
|
1701 | 1701 | else: |
|
1702 | 1702 | stb = self.InteractiveTB.structured_traceback(etype, |
|
1703 | 1703 | value, tb, tb_offset=tb_offset) |
|
1704 | 1704 | |
|
1705 | 1705 | self._showtraceback(etype, value, stb) |
|
1706 | 1706 | if self.call_pdb: |
|
1707 | 1707 | # drop into debugger |
|
1708 | 1708 | self.debugger(force=True) |
|
1709 | 1709 | return |
|
1710 | 1710 | |
|
1711 | 1711 | # Actually show the traceback |
|
1712 | 1712 | self._showtraceback(etype, value, stb) |
|
1713 | 1713 | |
|
1714 | 1714 | except KeyboardInterrupt: |
|
1715 | 1715 | self.write_err("\nKeyboardInterrupt\n") |
|
1716 | 1716 | |
|
1717 | 1717 | def _showtraceback(self, etype, evalue, stb): |
|
1718 | 1718 | """Actually show a traceback. |
|
1719 | 1719 | |
|
1720 | 1720 | Subclasses may override this method to put the traceback on a different |
|
1721 | 1721 | place, like a side channel. |
|
1722 | 1722 | """ |
|
1723 | 1723 | print >> io.stdout, self.InteractiveTB.stb2text(stb) |
|
1724 | 1724 | |
|
1725 | 1725 | def showsyntaxerror(self, filename=None): |
|
1726 | 1726 | """Display the syntax error that just occurred. |
|
1727 | 1727 | |
|
1728 | 1728 | This doesn't display a stack trace because there isn't one. |
|
1729 | 1729 | |
|
1730 | 1730 | If a filename is given, it is stuffed in the exception instead |
|
1731 | 1731 | of what was there before (because Python's parser always uses |
|
1732 | 1732 | "<string>" when reading from a string). |
|
1733 | 1733 | """ |
|
1734 | 1734 | etype, value, last_traceback = self._get_exc_info() |
|
1735 | 1735 | |
|
1736 | 1736 | if filename and etype is SyntaxError: |
|
1737 | 1737 | try: |
|
1738 | 1738 | value.filename = filename |
|
1739 | 1739 | except: |
|
1740 | 1740 | # Not the format we expect; leave it alone |
|
1741 | 1741 | pass |
|
1742 | 1742 | |
|
1743 | 1743 | stb = self.SyntaxTB.structured_traceback(etype, value, []) |
|
1744 | 1744 | self._showtraceback(etype, value, stb) |
|
1745 | 1745 | |
|
1746 | 1746 | # This is overridden in TerminalInteractiveShell to show a message about |
|
1747 | 1747 | # the %paste magic. |
|
1748 | 1748 | def showindentationerror(self): |
|
1749 | 1749 | """Called by run_cell when there's an IndentationError in code entered |
|
1750 | 1750 | at the prompt. |
|
1751 | 1751 | |
|
1752 | 1752 | This is overridden in TerminalInteractiveShell to show a message about |
|
1753 | 1753 | the %paste magic.""" |
|
1754 | 1754 | self.showsyntaxerror() |
|
1755 | 1755 | |
|
1756 | 1756 | #------------------------------------------------------------------------- |
|
1757 | 1757 | # Things related to readline |
|
1758 | 1758 | #------------------------------------------------------------------------- |
|
1759 | 1759 | |
|
1760 | 1760 | def init_readline(self): |
|
1761 | 1761 | """Command history completion/saving/reloading.""" |
|
1762 | 1762 | |
|
1763 | 1763 | if self.readline_use: |
|
1764 | 1764 | import IPython.utils.rlineimpl as readline |
|
1765 | 1765 | |
|
1766 | 1766 | self.rl_next_input = None |
|
1767 | 1767 | self.rl_do_indent = False |
|
1768 | 1768 | |
|
1769 | 1769 | if not self.readline_use or not readline.have_readline: |
|
1770 | 1770 | self.has_readline = False |
|
1771 | 1771 | self.readline = None |
|
1772 | 1772 | # Set a number of methods that depend on readline to be no-op |
|
1773 | 1773 | self.readline_no_record = no_op_context |
|
1774 | 1774 | self.set_readline_completer = no_op |
|
1775 | 1775 | self.set_custom_completer = no_op |
|
1776 | 1776 | self.set_completer_frame = no_op |
|
1777 | 1777 | if self.readline_use: |
|
1778 | 1778 | warn('Readline services not available or not loaded.') |
|
1779 | 1779 | else: |
|
1780 | 1780 | self.has_readline = True |
|
1781 | 1781 | self.readline = readline |
|
1782 | 1782 | sys.modules['readline'] = readline |
|
1783 | 1783 | |
|
1784 | 1784 | # Platform-specific configuration |
|
1785 | 1785 | if os.name == 'nt': |
|
1786 | 1786 | # FIXME - check with Frederick to see if we can harmonize |
|
1787 | 1787 | # naming conventions with pyreadline to avoid this |
|
1788 | 1788 | # platform-dependent check |
|
1789 | 1789 | self.readline_startup_hook = readline.set_pre_input_hook |
|
1790 | 1790 | else: |
|
1791 | 1791 | self.readline_startup_hook = readline.set_startup_hook |
|
1792 | 1792 | |
|
1793 | 1793 | # Load user's initrc file (readline config) |
|
1794 | 1794 | # Or if libedit is used, load editrc. |
|
1795 | 1795 | inputrc_name = os.environ.get('INPUTRC') |
|
1796 | 1796 | if inputrc_name is None: |
|
1797 | 1797 | inputrc_name = '.inputrc' |
|
1798 | 1798 | if readline.uses_libedit: |
|
1799 | 1799 | inputrc_name = '.editrc' |
|
1800 | 1800 | inputrc_name = os.path.join(self.home_dir, inputrc_name) |
|
1801 | 1801 | if os.path.isfile(inputrc_name): |
|
1802 | 1802 | try: |
|
1803 | 1803 | readline.read_init_file(inputrc_name) |
|
1804 | 1804 | except: |
|
1805 | 1805 | warn('Problems reading readline initialization file <%s>' |
|
1806 | 1806 | % inputrc_name) |
|
1807 | 1807 | |
|
1808 | 1808 | # Configure readline according to user's prefs |
|
1809 | 1809 | # This is only done if GNU readline is being used. If libedit |
|
1810 | 1810 | # is being used (as on Leopard) the readline config is |
|
1811 | 1811 | # not run as the syntax for libedit is different. |
|
1812 | 1812 | if not readline.uses_libedit: |
|
1813 | 1813 | for rlcommand in self.readline_parse_and_bind: |
|
1814 | 1814 | #print "loading rl:",rlcommand # dbg |
|
1815 | 1815 | readline.parse_and_bind(rlcommand) |
|
1816 | 1816 | |
|
1817 | 1817 | # Remove some chars from the delimiters list. If we encounter |
|
1818 | 1818 | # unicode chars, discard them. |
|
1819 | 1819 | delims = readline.get_completer_delims() |
|
1820 | 1820 | if not py3compat.PY3: |
|
1821 | 1821 | delims = delims.encode("ascii", "ignore") |
|
1822 | 1822 | for d in self.readline_remove_delims: |
|
1823 | 1823 | delims = delims.replace(d, "") |
|
1824 | 1824 | delims = delims.replace(ESC_MAGIC, '') |
|
1825 | 1825 | readline.set_completer_delims(delims) |
|
1826 | 1826 | # otherwise we end up with a monster history after a while: |
|
1827 | 1827 | readline.set_history_length(self.history_length) |
|
1828 | 1828 | |
|
1829 | 1829 | self.refill_readline_hist() |
|
1830 | 1830 | self.readline_no_record = ReadlineNoRecord(self) |
|
1831 | 1831 | |
|
1832 | 1832 | # Configure auto-indent for all platforms |
|
1833 | 1833 | self.set_autoindent(self.autoindent) |
|
1834 | 1834 | |
|
1835 | 1835 | def refill_readline_hist(self): |
|
1836 | 1836 | # Load the last 1000 lines from history |
|
1837 | 1837 | self.readline.clear_history() |
|
1838 | 1838 | stdin_encoding = sys.stdin.encoding or "utf-8" |
|
1839 | 1839 | last_cell = u"" |
|
1840 | 1840 | for _, _, cell in self.history_manager.get_tail(1000, |
|
1841 | 1841 | include_latest=True): |
|
1842 | 1842 | # Ignore blank lines and consecutive duplicates |
|
1843 | 1843 | cell = cell.rstrip() |
|
1844 | 1844 | if cell and (cell != last_cell): |
|
1845 | 1845 | if self.multiline_history: |
|
1846 | 1846 | self.readline.add_history(py3compat.unicode_to_str(cell, |
|
1847 | 1847 | stdin_encoding)) |
|
1848 | 1848 | else: |
|
1849 | 1849 | for line in cell.splitlines(): |
|
1850 | 1850 | self.readline.add_history(py3compat.unicode_to_str(line, |
|
1851 | 1851 | stdin_encoding)) |
|
1852 | 1852 | last_cell = cell |
|
1853 | 1853 | |
|
1854 | 1854 | def set_next_input(self, s): |
|
1855 | 1855 | """ Sets the 'default' input string for the next command line. |
|
1856 | 1856 | |
|
1857 | 1857 | Requires readline. |
|
1858 | 1858 | |
|
1859 | 1859 | Example: |
|
1860 | 1860 | |
|
1861 | 1861 | [D:\ipython]|1> _ip.set_next_input("Hello Word") |
|
1862 | 1862 | [D:\ipython]|2> Hello Word_ # cursor is here |
|
1863 | 1863 | """ |
|
1864 | 1864 | self.rl_next_input = py3compat.cast_bytes_py2(s) |
|
1865 | 1865 | |
|
1866 | 1866 | # Maybe move this to the terminal subclass? |
|
1867 | 1867 | def pre_readline(self): |
|
1868 | 1868 | """readline hook to be used at the start of each line. |
|
1869 | 1869 | |
|
1870 | 1870 | Currently it handles auto-indent only.""" |
|
1871 | 1871 | |
|
1872 | 1872 | if self.rl_do_indent: |
|
1873 | 1873 | self.readline.insert_text(self._indent_current_str()) |
|
1874 | 1874 | if self.rl_next_input is not None: |
|
1875 | 1875 | self.readline.insert_text(self.rl_next_input) |
|
1876 | 1876 | self.rl_next_input = None |
|
1877 | 1877 | |
|
1878 | 1878 | def _indent_current_str(self): |
|
1879 | 1879 | """return the current level of indentation as a string""" |
|
1880 | 1880 | return self.input_splitter.indent_spaces * ' ' |
|
1881 | 1881 | |
|
1882 | 1882 | #------------------------------------------------------------------------- |
|
1883 | 1883 | # Things related to text completion |
|
1884 | 1884 | #------------------------------------------------------------------------- |
|
1885 | 1885 | |
|
1886 | 1886 | def init_completer(self): |
|
1887 | 1887 | """Initialize the completion machinery. |
|
1888 | 1888 | |
|
1889 | 1889 | This creates completion machinery that can be used by client code, |
|
1890 | 1890 | either interactively in-process (typically triggered by the readline |
|
1891 | 1891 | library), programatically (such as in test suites) or out-of-prcess |
|
1892 | 1892 | (typically over the network by remote frontends). |
|
1893 | 1893 | """ |
|
1894 | 1894 | from IPython.core.completer import IPCompleter |
|
1895 | 1895 | from IPython.core.completerlib import (module_completer, |
|
1896 | 1896 | magic_run_completer, cd_completer, reset_completer) |
|
1897 | 1897 | |
|
1898 | 1898 | self.Completer = IPCompleter(shell=self, |
|
1899 | 1899 | namespace=self.user_ns, |
|
1900 | 1900 | global_namespace=self.user_global_ns, |
|
1901 | 1901 | alias_table=self.alias_manager.alias_table, |
|
1902 | 1902 | use_readline=self.has_readline, |
|
1903 | 1903 | config=self.config, |
|
1904 | 1904 | ) |
|
1905 | 1905 | self.configurables.append(self.Completer) |
|
1906 | 1906 | |
|
1907 | 1907 | # Add custom completers to the basic ones built into IPCompleter |
|
1908 | 1908 | sdisp = self.strdispatchers.get('complete_command', StrDispatch()) |
|
1909 | 1909 | self.strdispatchers['complete_command'] = sdisp |
|
1910 | 1910 | self.Completer.custom_completers = sdisp |
|
1911 | 1911 | |
|
1912 | 1912 | self.set_hook('complete_command', module_completer, str_key = 'import') |
|
1913 | 1913 | self.set_hook('complete_command', module_completer, str_key = 'from') |
|
1914 | 1914 | self.set_hook('complete_command', magic_run_completer, str_key = '%run') |
|
1915 | 1915 | self.set_hook('complete_command', cd_completer, str_key = '%cd') |
|
1916 | 1916 | self.set_hook('complete_command', reset_completer, str_key = '%reset') |
|
1917 | 1917 | |
|
1918 | 1918 | # Only configure readline if we truly are using readline. IPython can |
|
1919 | 1919 | # do tab-completion over the network, in GUIs, etc, where readline |
|
1920 | 1920 | # itself may be absent |
|
1921 | 1921 | if self.has_readline: |
|
1922 | 1922 | self.set_readline_completer() |
|
1923 | 1923 | |
|
1924 | 1924 | def complete(self, text, line=None, cursor_pos=None): |
|
1925 | 1925 | """Return the completed text and a list of completions. |
|
1926 | 1926 | |
|
1927 | 1927 | Parameters |
|
1928 | 1928 | ---------- |
|
1929 | 1929 | |
|
1930 | 1930 | text : string |
|
1931 | 1931 | A string of text to be completed on. It can be given as empty and |
|
1932 | 1932 | instead a line/position pair are given. In this case, the |
|
1933 | 1933 | completer itself will split the line like readline does. |
|
1934 | 1934 | |
|
1935 | 1935 | line : string, optional |
|
1936 | 1936 | The complete line that text is part of. |
|
1937 | 1937 | |
|
1938 | 1938 | cursor_pos : int, optional |
|
1939 | 1939 | The position of the cursor on the input line. |
|
1940 | 1940 | |
|
1941 | 1941 | Returns |
|
1942 | 1942 | ------- |
|
1943 | 1943 | text : string |
|
1944 | 1944 | The actual text that was completed. |
|
1945 | 1945 | |
|
1946 | 1946 | matches : list |
|
1947 | 1947 | A sorted list with all possible completions. |
|
1948 | 1948 | |
|
1949 | 1949 | The optional arguments allow the completion to take more context into |
|
1950 | 1950 | account, and are part of the low-level completion API. |
|
1951 | 1951 | |
|
1952 | 1952 | This is a wrapper around the completion mechanism, similar to what |
|
1953 | 1953 | readline does at the command line when the TAB key is hit. By |
|
1954 | 1954 | exposing it as a method, it can be used by other non-readline |
|
1955 | 1955 | environments (such as GUIs) for text completion. |
|
1956 | 1956 | |
|
1957 | 1957 | Simple usage example: |
|
1958 | 1958 | |
|
1959 | 1959 | In [1]: x = 'hello' |
|
1960 | 1960 | |
|
1961 | 1961 | In [2]: _ip.complete('x.l') |
|
1962 | 1962 | Out[2]: ('x.l', ['x.ljust', 'x.lower', 'x.lstrip']) |
|
1963 | 1963 | """ |
|
1964 | 1964 | |
|
1965 | 1965 | # Inject names into __builtin__ so we can complete on the added names. |
|
1966 | 1966 | with self.builtin_trap: |
|
1967 | 1967 | return self.Completer.complete(text, line, cursor_pos) |
|
1968 | 1968 | |
|
1969 | 1969 | def set_custom_completer(self, completer, pos=0): |
|
1970 | 1970 | """Adds a new custom completer function. |
|
1971 | 1971 | |
|
1972 | 1972 | The position argument (defaults to 0) is the index in the completers |
|
1973 | 1973 | list where you want the completer to be inserted.""" |
|
1974 | 1974 | |
|
1975 | 1975 | newcomp = types.MethodType(completer,self.Completer) |
|
1976 | 1976 | self.Completer.matchers.insert(pos,newcomp) |
|
1977 | 1977 | |
|
1978 | 1978 | def set_readline_completer(self): |
|
1979 | 1979 | """Reset readline's completer to be our own.""" |
|
1980 | 1980 | self.readline.set_completer(self.Completer.rlcomplete) |
|
1981 | 1981 | |
|
1982 | 1982 | def set_completer_frame(self, frame=None): |
|
1983 | 1983 | """Set the frame of the completer.""" |
|
1984 | 1984 | if frame: |
|
1985 | 1985 | self.Completer.namespace = frame.f_locals |
|
1986 | 1986 | self.Completer.global_namespace = frame.f_globals |
|
1987 | 1987 | else: |
|
1988 | 1988 | self.Completer.namespace = self.user_ns |
|
1989 | 1989 | self.Completer.global_namespace = self.user_global_ns |
|
1990 | 1990 | |
|
1991 | 1991 | #------------------------------------------------------------------------- |
|
1992 | 1992 | # Things related to magics |
|
1993 | 1993 | #------------------------------------------------------------------------- |
|
1994 | 1994 | |
|
1995 | 1995 | def init_magics(self): |
|
1996 | 1996 | from IPython.core import magics as m |
|
1997 | 1997 | self.magics_manager = magic.MagicsManager(shell=self, |
|
1998 | 1998 | confg=self.config, |
|
1999 | 1999 | user_magics=m.UserMagics(self)) |
|
2000 | 2000 | self.configurables.append(self.magics_manager) |
|
2001 | 2001 | |
|
2002 | 2002 | # Expose as public API from the magics manager |
|
2003 | 2003 | self.register_magics = self.magics_manager.register |
|
2004 | 2004 | self.register_magic_function = self.magics_manager.register_function |
|
2005 | 2005 | self.define_magic = self.magics_manager.define_magic |
|
2006 | 2006 | |
|
2007 | 2007 | self.register_magics(m.AutoMagics, m.BasicMagics, m.CodeMagics, |
|
2008 | 2008 | m.ConfigMagics, m.DeprecatedMagics, m.ExecutionMagics, |
|
2009 | 2009 | m.ExtensionMagics, m.HistoryMagics, m.LoggingMagics, |
|
2010 | 2010 | m.NamespaceMagics, m.OSMagics, m.PylabMagics ) |
|
2011 | 2011 | |
|
2012 | 2012 | # FIXME: Move the color initialization to the DisplayHook, which |
|
2013 | 2013 | # should be split into a prompt manager and displayhook. We probably |
|
2014 | 2014 | # even need a centralize colors management object. |
|
2015 | 2015 | self.magic('colors %s' % self.colors) |
|
2016 | 2016 | |
|
2017 | 2017 | def line_magic(self, magic_name, line): |
|
2018 | 2018 | """Execute the given line magic. |
|
2019 | 2019 | |
|
2020 | 2020 | Parameters |
|
2021 | 2021 | ---------- |
|
2022 | 2022 | magic_name : str |
|
2023 | 2023 | Name of the desired magic function, without '%' prefix. |
|
2024 | 2024 | |
|
2025 | 2025 | line : str |
|
2026 | 2026 | The rest of the input line as a single string. |
|
2027 | 2027 | """ |
|
2028 | 2028 | fn = self.find_line_magic(magic_name) |
|
2029 | 2029 | if fn is None: |
|
2030 |
e |
|
|
2030 | em = "Line magic function `%%%s` not found" % magic_name | |
|
2031 | cm = self.find_cell_magic(magic_name) | |
|
2032 | if cm is not None: | |
|
2033 | em += (' (Did you by chance mean the cell magic `%%%%%s` ' | |
|
2034 | 'instead?).') | |
|
2035 | error() | |
|
2031 | 2036 | else: |
|
2032 | 2037 | # Note: this is the distance in the stack to the user's frame. |
|
2033 | 2038 | # This will need to be updated if the internal calling logic gets |
|
2034 | 2039 | # refactored, or else we'll be expanding the wrong variables. |
|
2035 | 2040 | stack_depth = 2 |
|
2036 | 2041 | magic_arg_s = self.var_expand(line, stack_depth) |
|
2037 | 2042 | # Put magic args in a list so we can call with f(*a) syntax |
|
2038 | 2043 | args = [magic_arg_s] |
|
2039 | 2044 | # Grab local namespace if we need it: |
|
2040 | 2045 | if getattr(fn, "needs_local_scope", False): |
|
2041 | 2046 | args.append(sys._getframe(stack_depth).f_locals) |
|
2042 | 2047 | with self.builtin_trap: |
|
2043 | 2048 | result = fn(*args) |
|
2044 | 2049 | return result |
|
2045 | 2050 | |
|
2046 | 2051 | def cell_magic(self, magic_name, line, cell): |
|
2047 | 2052 | """Execute the given cell magic. |
|
2048 | 2053 | """ |
|
2049 | 2054 | fn = self.find_cell_magic(magic_name) |
|
2050 | 2055 | if fn is None: |
|
2051 | 2056 | error("Cell magic function `%%%%%s` not found." % magic_name) |
|
2052 | 2057 | else: |
|
2053 | 2058 | # Note: this is the distance in the stack to the user's frame. |
|
2054 | 2059 | # This will need to be updated if the internal calling logic gets |
|
2055 | 2060 | # refactored, or else we'll be expanding the wrong variables. |
|
2056 | 2061 | stack_depth = 2 |
|
2057 | 2062 | magic_arg_s = self.var_expand(line, stack_depth) |
|
2058 | 2063 | with self.builtin_trap: |
|
2059 | 2064 | result = fn(line, cell) |
|
2060 | 2065 | return result |
|
2061 | 2066 | |
|
2062 | 2067 | def find_line_magic(self, magic_name): |
|
2063 | 2068 | """Find and return a line magic by name. |
|
2064 | 2069 | |
|
2065 | 2070 | Returns None if the magic isn't found.""" |
|
2066 | 2071 | return self.magics_manager.magics['line'].get(magic_name) |
|
2067 | 2072 | |
|
2068 | 2073 | def find_cell_magic(self, magic_name): |
|
2069 | 2074 | """Find and return a cell magic by name. |
|
2070 | 2075 | |
|
2071 | 2076 | Returns None if the magic isn't found.""" |
|
2072 | 2077 | return self.magics_manager.magics['cell'].get(magic_name) |
|
2073 | 2078 | |
|
2074 | 2079 | def find_magic(self, magic_name, magic_kind='line'): |
|
2075 | 2080 | """Find and return a magic of the given type by name. |
|
2076 | 2081 | |
|
2077 | 2082 | Returns None if the magic isn't found.""" |
|
2078 | 2083 | return self.magics_manager.magics[magic_kind].get(magic_name) |
|
2079 | 2084 | |
|
2080 | 2085 | def magic(self, arg_s): |
|
2081 | 2086 | """DEPRECATED. Use line_magic() instead. |
|
2082 | 2087 | |
|
2083 | 2088 | Call a magic function by name. |
|
2084 | 2089 | |
|
2085 | 2090 | Input: a string containing the name of the magic function to call and |
|
2086 | 2091 | any additional arguments to be passed to the magic. |
|
2087 | 2092 | |
|
2088 | 2093 | magic('name -opt foo bar') is equivalent to typing at the ipython |
|
2089 | 2094 | prompt: |
|
2090 | 2095 | |
|
2091 | 2096 | In[1]: %name -opt foo bar |
|
2092 | 2097 | |
|
2093 | 2098 | To call a magic without arguments, simply use magic('name'). |
|
2094 | 2099 | |
|
2095 | 2100 | This provides a proper Python function to call IPython's magics in any |
|
2096 | 2101 | valid Python code you can type at the interpreter, including loops and |
|
2097 | 2102 | compound statements. |
|
2098 | 2103 | """ |
|
2099 | 2104 | # TODO: should we issue a loud deprecation warning here? |
|
2100 | 2105 | magic_name, _, magic_arg_s = arg_s.partition(' ') |
|
2101 | 2106 | magic_name = magic_name.lstrip(prefilter.ESC_MAGIC) |
|
2102 | 2107 | return self.line_magic(magic_name, magic_arg_s) |
|
2103 | 2108 | |
|
2104 | 2109 | #------------------------------------------------------------------------- |
|
2105 | 2110 | # Things related to macros |
|
2106 | 2111 | #------------------------------------------------------------------------- |
|
2107 | 2112 | |
|
2108 | 2113 | def define_macro(self, name, themacro): |
|
2109 | 2114 | """Define a new macro |
|
2110 | 2115 | |
|
2111 | 2116 | Parameters |
|
2112 | 2117 | ---------- |
|
2113 | 2118 | name : str |
|
2114 | 2119 | The name of the macro. |
|
2115 | 2120 | themacro : str or Macro |
|
2116 | 2121 | The action to do upon invoking the macro. If a string, a new |
|
2117 | 2122 | Macro object is created by passing the string to it. |
|
2118 | 2123 | """ |
|
2119 | 2124 | |
|
2120 | 2125 | from IPython.core import macro |
|
2121 | 2126 | |
|
2122 | 2127 | if isinstance(themacro, basestring): |
|
2123 | 2128 | themacro = macro.Macro(themacro) |
|
2124 | 2129 | if not isinstance(themacro, macro.Macro): |
|
2125 | 2130 | raise ValueError('A macro must be a string or a Macro instance.') |
|
2126 | 2131 | self.user_ns[name] = themacro |
|
2127 | 2132 | |
|
2128 | 2133 | #------------------------------------------------------------------------- |
|
2129 | 2134 | # Things related to the running of system commands |
|
2130 | 2135 | #------------------------------------------------------------------------- |
|
2131 | 2136 | |
|
2132 | 2137 | def system_piped(self, cmd): |
|
2133 | 2138 | """Call the given cmd in a subprocess, piping stdout/err |
|
2134 | 2139 | |
|
2135 | 2140 | Parameters |
|
2136 | 2141 | ---------- |
|
2137 | 2142 | cmd : str |
|
2138 | 2143 | Command to execute (can not end in '&', as background processes are |
|
2139 | 2144 | not supported. Should not be a command that expects input |
|
2140 | 2145 | other than simple text. |
|
2141 | 2146 | """ |
|
2142 | 2147 | if cmd.rstrip().endswith('&'): |
|
2143 | 2148 | # this is *far* from a rigorous test |
|
2144 | 2149 | # We do not support backgrounding processes because we either use |
|
2145 | 2150 | # pexpect or pipes to read from. Users can always just call |
|
2146 | 2151 | # os.system() or use ip.system=ip.system_raw |
|
2147 | 2152 | # if they really want a background process. |
|
2148 | 2153 | raise OSError("Background processes not supported.") |
|
2149 | 2154 | |
|
2150 | 2155 | # we explicitly do NOT return the subprocess status code, because |
|
2151 | 2156 | # a non-None value would trigger :func:`sys.displayhook` calls. |
|
2152 | 2157 | # Instead, we store the exit_code in user_ns. |
|
2153 | 2158 | self.user_ns['_exit_code'] = system(self.var_expand(cmd, depth=2)) |
|
2154 | 2159 | |
|
2155 | 2160 | def system_raw(self, cmd): |
|
2156 | 2161 | """Call the given cmd in a subprocess using os.system |
|
2157 | 2162 | |
|
2158 | 2163 | Parameters |
|
2159 | 2164 | ---------- |
|
2160 | 2165 | cmd : str |
|
2161 | 2166 | Command to execute. |
|
2162 | 2167 | """ |
|
2163 | 2168 | cmd = self.var_expand(cmd, depth=2) |
|
2164 | 2169 | # protect os.system from UNC paths on Windows, which it can't handle: |
|
2165 | 2170 | if sys.platform == 'win32': |
|
2166 | 2171 | from IPython.utils._process_win32 import AvoidUNCPath |
|
2167 | 2172 | with AvoidUNCPath() as path: |
|
2168 | 2173 | if path is not None: |
|
2169 | 2174 | cmd = '"pushd %s &&"%s' % (path, cmd) |
|
2170 | 2175 | cmd = py3compat.unicode_to_str(cmd) |
|
2171 | 2176 | ec = os.system(cmd) |
|
2172 | 2177 | else: |
|
2173 | 2178 | cmd = py3compat.unicode_to_str(cmd) |
|
2174 | 2179 | ec = os.system(cmd) |
|
2175 | 2180 | |
|
2176 | 2181 | # We explicitly do NOT return the subprocess status code, because |
|
2177 | 2182 | # a non-None value would trigger :func:`sys.displayhook` calls. |
|
2178 | 2183 | # Instead, we store the exit_code in user_ns. |
|
2179 | 2184 | self.user_ns['_exit_code'] = ec |
|
2180 | 2185 | |
|
2181 | 2186 | # use piped system by default, because it is better behaved |
|
2182 | 2187 | system = system_piped |
|
2183 | 2188 | |
|
2184 | 2189 | def getoutput(self, cmd, split=True): |
|
2185 | 2190 | """Get output (possibly including stderr) from a subprocess. |
|
2186 | 2191 | |
|
2187 | 2192 | Parameters |
|
2188 | 2193 | ---------- |
|
2189 | 2194 | cmd : str |
|
2190 | 2195 | Command to execute (can not end in '&', as background processes are |
|
2191 | 2196 | not supported. |
|
2192 | 2197 | split : bool, optional |
|
2193 | 2198 | |
|
2194 | 2199 | If True, split the output into an IPython SList. Otherwise, an |
|
2195 | 2200 | IPython LSString is returned. These are objects similar to normal |
|
2196 | 2201 | lists and strings, with a few convenience attributes for easier |
|
2197 | 2202 | manipulation of line-based output. You can use '?' on them for |
|
2198 | 2203 | details. |
|
2199 | 2204 | """ |
|
2200 | 2205 | if cmd.rstrip().endswith('&'): |
|
2201 | 2206 | # this is *far* from a rigorous test |
|
2202 | 2207 | raise OSError("Background processes not supported.") |
|
2203 | 2208 | out = getoutput(self.var_expand(cmd, depth=2)) |
|
2204 | 2209 | if split: |
|
2205 | 2210 | out = SList(out.splitlines()) |
|
2206 | 2211 | else: |
|
2207 | 2212 | out = LSString(out) |
|
2208 | 2213 | return out |
|
2209 | 2214 | |
|
2210 | 2215 | #------------------------------------------------------------------------- |
|
2211 | 2216 | # Things related to aliases |
|
2212 | 2217 | #------------------------------------------------------------------------- |
|
2213 | 2218 | |
|
2214 | 2219 | def init_alias(self): |
|
2215 | 2220 | self.alias_manager = AliasManager(shell=self, config=self.config) |
|
2216 | 2221 | self.configurables.append(self.alias_manager) |
|
2217 | 2222 | self.ns_table['alias'] = self.alias_manager.alias_table, |
|
2218 | 2223 | |
|
2219 | 2224 | #------------------------------------------------------------------------- |
|
2220 | 2225 | # Things related to extensions and plugins |
|
2221 | 2226 | #------------------------------------------------------------------------- |
|
2222 | 2227 | |
|
2223 | 2228 | def init_extension_manager(self): |
|
2224 | 2229 | self.extension_manager = ExtensionManager(shell=self, config=self.config) |
|
2225 | 2230 | self.configurables.append(self.extension_manager) |
|
2226 | 2231 | |
|
2227 | 2232 | def init_plugin_manager(self): |
|
2228 | 2233 | self.plugin_manager = PluginManager(config=self.config) |
|
2229 | 2234 | self.configurables.append(self.plugin_manager) |
|
2230 | 2235 | |
|
2231 | 2236 | |
|
2232 | 2237 | #------------------------------------------------------------------------- |
|
2233 | 2238 | # Things related to payloads |
|
2234 | 2239 | #------------------------------------------------------------------------- |
|
2235 | 2240 | |
|
2236 | 2241 | def init_payload(self): |
|
2237 | 2242 | self.payload_manager = PayloadManager(config=self.config) |
|
2238 | 2243 | self.configurables.append(self.payload_manager) |
|
2239 | 2244 | |
|
2240 | 2245 | #------------------------------------------------------------------------- |
|
2241 | 2246 | # Things related to the prefilter |
|
2242 | 2247 | #------------------------------------------------------------------------- |
|
2243 | 2248 | |
|
2244 | 2249 | def init_prefilter(self): |
|
2245 | 2250 | self.prefilter_manager = PrefilterManager(shell=self, config=self.config) |
|
2246 | 2251 | self.configurables.append(self.prefilter_manager) |
|
2247 | 2252 | # Ultimately this will be refactored in the new interpreter code, but |
|
2248 | 2253 | # for now, we should expose the main prefilter method (there's legacy |
|
2249 | 2254 | # code out there that may rely on this). |
|
2250 | 2255 | self.prefilter = self.prefilter_manager.prefilter_lines |
|
2251 | 2256 | |
|
2252 | 2257 | def auto_rewrite_input(self, cmd): |
|
2253 | 2258 | """Print to the screen the rewritten form of the user's command. |
|
2254 | 2259 | |
|
2255 | 2260 | This shows visual feedback by rewriting input lines that cause |
|
2256 | 2261 | automatic calling to kick in, like:: |
|
2257 | 2262 | |
|
2258 | 2263 | /f x |
|
2259 | 2264 | |
|
2260 | 2265 | into:: |
|
2261 | 2266 | |
|
2262 | 2267 | ------> f(x) |
|
2263 | 2268 | |
|
2264 | 2269 | after the user's input prompt. This helps the user understand that the |
|
2265 | 2270 | input line was transformed automatically by IPython. |
|
2266 | 2271 | """ |
|
2267 | 2272 | if not self.show_rewritten_input: |
|
2268 | 2273 | return |
|
2269 | 2274 | |
|
2270 | 2275 | rw = self.prompt_manager.render('rewrite') + cmd |
|
2271 | 2276 | |
|
2272 | 2277 | try: |
|
2273 | 2278 | # plain ascii works better w/ pyreadline, on some machines, so |
|
2274 | 2279 | # we use it and only print uncolored rewrite if we have unicode |
|
2275 | 2280 | rw = str(rw) |
|
2276 | 2281 | print >> io.stdout, rw |
|
2277 | 2282 | except UnicodeEncodeError: |
|
2278 | 2283 | print "------> " + cmd |
|
2279 | 2284 | |
|
2280 | 2285 | #------------------------------------------------------------------------- |
|
2281 | 2286 | # Things related to extracting values/expressions from kernel and user_ns |
|
2282 | 2287 | #------------------------------------------------------------------------- |
|
2283 | 2288 | |
|
2284 | 2289 | def _simple_error(self): |
|
2285 | 2290 | etype, value = sys.exc_info()[:2] |
|
2286 | 2291 | return u'[ERROR] {e.__name__}: {v}'.format(e=etype, v=value) |
|
2287 | 2292 | |
|
2288 | 2293 | def user_variables(self, names): |
|
2289 | 2294 | """Get a list of variable names from the user's namespace. |
|
2290 | 2295 | |
|
2291 | 2296 | Parameters |
|
2292 | 2297 | ---------- |
|
2293 | 2298 | names : list of strings |
|
2294 | 2299 | A list of names of variables to be read from the user namespace. |
|
2295 | 2300 | |
|
2296 | 2301 | Returns |
|
2297 | 2302 | ------- |
|
2298 | 2303 | A dict, keyed by the input names and with the repr() of each value. |
|
2299 | 2304 | """ |
|
2300 | 2305 | out = {} |
|
2301 | 2306 | user_ns = self.user_ns |
|
2302 | 2307 | for varname in names: |
|
2303 | 2308 | try: |
|
2304 | 2309 | value = repr(user_ns[varname]) |
|
2305 | 2310 | except: |
|
2306 | 2311 | value = self._simple_error() |
|
2307 | 2312 | out[varname] = value |
|
2308 | 2313 | return out |
|
2309 | 2314 | |
|
2310 | 2315 | def user_expressions(self, expressions): |
|
2311 | 2316 | """Evaluate a dict of expressions in the user's namespace. |
|
2312 | 2317 | |
|
2313 | 2318 | Parameters |
|
2314 | 2319 | ---------- |
|
2315 | 2320 | expressions : dict |
|
2316 | 2321 | A dict with string keys and string values. The expression values |
|
2317 | 2322 | should be valid Python expressions, each of which will be evaluated |
|
2318 | 2323 | in the user namespace. |
|
2319 | 2324 | |
|
2320 | 2325 | Returns |
|
2321 | 2326 | ------- |
|
2322 | 2327 | A dict, keyed like the input expressions dict, with the repr() of each |
|
2323 | 2328 | value. |
|
2324 | 2329 | """ |
|
2325 | 2330 | out = {} |
|
2326 | 2331 | user_ns = self.user_ns |
|
2327 | 2332 | global_ns = self.user_global_ns |
|
2328 | 2333 | for key, expr in expressions.iteritems(): |
|
2329 | 2334 | try: |
|
2330 | 2335 | value = repr(eval(expr, global_ns, user_ns)) |
|
2331 | 2336 | except: |
|
2332 | 2337 | value = self._simple_error() |
|
2333 | 2338 | out[key] = value |
|
2334 | 2339 | return out |
|
2335 | 2340 | |
|
2336 | 2341 | #------------------------------------------------------------------------- |
|
2337 | 2342 | # Things related to the running of code |
|
2338 | 2343 | #------------------------------------------------------------------------- |
|
2339 | 2344 | |
|
2340 | 2345 | def ex(self, cmd): |
|
2341 | 2346 | """Execute a normal python statement in user namespace.""" |
|
2342 | 2347 | with self.builtin_trap: |
|
2343 | 2348 | exec cmd in self.user_global_ns, self.user_ns |
|
2344 | 2349 | |
|
2345 | 2350 | def ev(self, expr): |
|
2346 | 2351 | """Evaluate python expression expr in user namespace. |
|
2347 | 2352 | |
|
2348 | 2353 | Returns the result of evaluation |
|
2349 | 2354 | """ |
|
2350 | 2355 | with self.builtin_trap: |
|
2351 | 2356 | return eval(expr, self.user_global_ns, self.user_ns) |
|
2352 | 2357 | |
|
2353 | 2358 | def safe_execfile(self, fname, *where, **kw): |
|
2354 | 2359 | """A safe version of the builtin execfile(). |
|
2355 | 2360 | |
|
2356 | 2361 | This version will never throw an exception, but instead print |
|
2357 | 2362 | helpful error messages to the screen. This only works on pure |
|
2358 | 2363 | Python files with the .py extension. |
|
2359 | 2364 | |
|
2360 | 2365 | Parameters |
|
2361 | 2366 | ---------- |
|
2362 | 2367 | fname : string |
|
2363 | 2368 | The name of the file to be executed. |
|
2364 | 2369 | where : tuple |
|
2365 | 2370 | One or two namespaces, passed to execfile() as (globals,locals). |
|
2366 | 2371 | If only one is given, it is passed as both. |
|
2367 | 2372 | exit_ignore : bool (False) |
|
2368 | 2373 | If True, then silence SystemExit for non-zero status (it is always |
|
2369 | 2374 | silenced for zero status, as it is so common). |
|
2370 | 2375 | raise_exceptions : bool (False) |
|
2371 | 2376 | If True raise exceptions everywhere. Meant for testing. |
|
2372 | 2377 | |
|
2373 | 2378 | """ |
|
2374 | 2379 | kw.setdefault('exit_ignore', False) |
|
2375 | 2380 | kw.setdefault('raise_exceptions', False) |
|
2376 | 2381 | |
|
2377 | 2382 | fname = os.path.abspath(os.path.expanduser(fname)) |
|
2378 | 2383 | |
|
2379 | 2384 | # Make sure we can open the file |
|
2380 | 2385 | try: |
|
2381 | 2386 | with open(fname) as thefile: |
|
2382 | 2387 | pass |
|
2383 | 2388 | except: |
|
2384 | 2389 | warn('Could not open file <%s> for safe execution.' % fname) |
|
2385 | 2390 | return |
|
2386 | 2391 | |
|
2387 | 2392 | # Find things also in current directory. This is needed to mimic the |
|
2388 | 2393 | # behavior of running a script from the system command line, where |
|
2389 | 2394 | # Python inserts the script's directory into sys.path |
|
2390 | 2395 | dname = os.path.dirname(fname) |
|
2391 | 2396 | |
|
2392 | 2397 | with prepended_to_syspath(dname): |
|
2393 | 2398 | try: |
|
2394 | 2399 | py3compat.execfile(fname,*where) |
|
2395 | 2400 | except SystemExit, status: |
|
2396 | 2401 | # If the call was made with 0 or None exit status (sys.exit(0) |
|
2397 | 2402 | # or sys.exit() ), don't bother showing a traceback, as both of |
|
2398 | 2403 | # these are considered normal by the OS: |
|
2399 | 2404 | # > python -c'import sys;sys.exit(0)'; echo $? |
|
2400 | 2405 | # 0 |
|
2401 | 2406 | # > python -c'import sys;sys.exit()'; echo $? |
|
2402 | 2407 | # 0 |
|
2403 | 2408 | # For other exit status, we show the exception unless |
|
2404 | 2409 | # explicitly silenced, but only in short form. |
|
2405 | 2410 | if kw['raise_exceptions']: |
|
2406 | 2411 | raise |
|
2407 | 2412 | if status.code not in (0, None) and not kw['exit_ignore']: |
|
2408 | 2413 | self.showtraceback(exception_only=True) |
|
2409 | 2414 | except: |
|
2410 | 2415 | if kw['raise_exceptions']: |
|
2411 | 2416 | raise |
|
2412 | 2417 | self.showtraceback() |
|
2413 | 2418 | |
|
2414 | 2419 | def safe_execfile_ipy(self, fname): |
|
2415 | 2420 | """Like safe_execfile, but for .ipy files with IPython syntax. |
|
2416 | 2421 | |
|
2417 | 2422 | Parameters |
|
2418 | 2423 | ---------- |
|
2419 | 2424 | fname : str |
|
2420 | 2425 | The name of the file to execute. The filename must have a |
|
2421 | 2426 | .ipy extension. |
|
2422 | 2427 | """ |
|
2423 | 2428 | fname = os.path.abspath(os.path.expanduser(fname)) |
|
2424 | 2429 | |
|
2425 | 2430 | # Make sure we can open the file |
|
2426 | 2431 | try: |
|
2427 | 2432 | with open(fname) as thefile: |
|
2428 | 2433 | pass |
|
2429 | 2434 | except: |
|
2430 | 2435 | warn('Could not open file <%s> for safe execution.' % fname) |
|
2431 | 2436 | return |
|
2432 | 2437 | |
|
2433 | 2438 | # Find things also in current directory. This is needed to mimic the |
|
2434 | 2439 | # behavior of running a script from the system command line, where |
|
2435 | 2440 | # Python inserts the script's directory into sys.path |
|
2436 | 2441 | dname = os.path.dirname(fname) |
|
2437 | 2442 | |
|
2438 | 2443 | with prepended_to_syspath(dname): |
|
2439 | 2444 | try: |
|
2440 | 2445 | with open(fname) as thefile: |
|
2441 | 2446 | # self.run_cell currently captures all exceptions |
|
2442 | 2447 | # raised in user code. It would be nice if there were |
|
2443 | 2448 | # versions of runlines, execfile that did raise, so |
|
2444 | 2449 | # we could catch the errors. |
|
2445 | 2450 | self.run_cell(thefile.read(), store_history=False) |
|
2446 | 2451 | except: |
|
2447 | 2452 | self.showtraceback() |
|
2448 | 2453 | warn('Unknown failure executing file: <%s>' % fname) |
|
2449 | 2454 | |
|
2450 | 2455 | def safe_run_module(self, mod_name, where): |
|
2451 | 2456 | """A safe version of runpy.run_module(). |
|
2452 | 2457 | |
|
2453 | 2458 | This version will never throw an exception, but instead print |
|
2454 | 2459 | helpful error messages to the screen. |
|
2455 | 2460 | |
|
2456 | 2461 | Parameters |
|
2457 | 2462 | ---------- |
|
2458 | 2463 | mod_name : string |
|
2459 | 2464 | The name of the module to be executed. |
|
2460 | 2465 | where : dict |
|
2461 | 2466 | The globals namespace. |
|
2462 | 2467 | """ |
|
2463 | 2468 | try: |
|
2464 | 2469 | where.update( |
|
2465 | 2470 | runpy.run_module(str(mod_name), run_name="__main__", |
|
2466 | 2471 | alter_sys=True) |
|
2467 | 2472 | ) |
|
2468 | 2473 | except: |
|
2469 | 2474 | self.showtraceback() |
|
2470 | 2475 | warn('Unknown failure executing module: <%s>' % mod_name) |
|
2471 | 2476 | |
|
2472 | def call_cell_magic(self, raw_cell, store_history=False): | |
|
2473 | line, _, cell = raw_cell.partition(os.linesep) | |
|
2474 | magic_name, _, line = line.partition(' ') | |
|
2475 | magic_name = magic_name.lstrip(prefilter.ESC_MAGIC) | |
|
2476 | return self.cell_magic(magic_name, line, cell) | |
|
2477 | ||
|
2478 | 2477 | def _cell_magic(self, magic_name, line): |
|
2478 | """Special method to call a cell magic with the data stored in self. | |
|
2479 | """ | |
|
2479 | 2480 | cell = self._current_cell_magic_body |
|
2480 | 2481 | self._current_cell_magic_body = None |
|
2481 | 2482 | return self.cell_magic(magic_name, line, cell) |
|
2482 | 2483 | |
|
2483 | 2484 | def run_cell(self, raw_cell, store_history=False, silent=False): |
|
2484 | 2485 | """Run a complete IPython cell. |
|
2485 | 2486 | |
|
2486 | 2487 | Parameters |
|
2487 | 2488 | ---------- |
|
2488 | 2489 | raw_cell : str |
|
2489 | 2490 | The code (including IPython code such as %magic functions) to run. |
|
2490 | 2491 | store_history : bool |
|
2491 | 2492 | If True, the raw and translated cell will be stored in IPython's |
|
2492 | 2493 | history. For user code calling back into IPython's machinery, this |
|
2493 | 2494 | should be set to False. |
|
2494 | 2495 | silent : bool |
|
2495 | 2496 | If True, avoid side-effets, such as implicit displayhooks, history, |
|
2496 | 2497 | and logging. silent=True forces store_history=False. |
|
2497 | 2498 | """ |
|
2498 | 2499 | if (not raw_cell) or raw_cell.isspace(): |
|
2499 | 2500 | return |
|
2500 | 2501 | |
|
2501 | 2502 | if silent: |
|
2502 | 2503 | store_history = False |
|
2503 | 2504 | |
|
2504 | 2505 | self.input_splitter.push(raw_cell) |
|
2505 | 2506 | |
|
2506 | 2507 | # Check for cell magics, which leave state behind. This interface is |
|
2507 | 2508 | # ugly, we need to do something cleaner later... Now the logic is |
|
2508 | 2509 | # simply that the input_splitter remembers if there was a cell magic, |
|
2509 | 2510 | # and in that case we grab the cell body. |
|
2510 |
if self.input_splitter.cell_magic_ |
|
|
2511 |
self._current_cell_magic_body = |
|
|
2511 | if self.input_splitter.cell_magic_parts: | |
|
2512 | self._current_cell_magic_body = \ | |
|
2513 | ''.join(self.input_splitter.cell_magic_parts) | |
|
2512 | 2514 | cell = self.input_splitter.source_reset() |
|
2513 | 2515 | |
|
2514 | 2516 | with self.builtin_trap: |
|
2515 | 2517 | prefilter_failed = False |
|
2516 | 2518 | if len(cell.splitlines()) == 1: |
|
2517 | 2519 | try: |
|
2518 | 2520 | # use prefilter_lines to handle trailing newlines |
|
2519 | 2521 | # restore trailing newline for ast.parse |
|
2520 | 2522 | cell = self.prefilter_manager.prefilter_lines(cell) + '\n' |
|
2521 | 2523 | except AliasError as e: |
|
2522 | 2524 | error(e) |
|
2523 | 2525 | prefilter_failed = True |
|
2524 | 2526 | except Exception: |
|
2525 | 2527 | # don't allow prefilter errors to crash IPython |
|
2526 | 2528 | self.showtraceback() |
|
2527 | 2529 | prefilter_failed = True |
|
2528 | 2530 | |
|
2529 | 2531 | # Store raw and processed history |
|
2530 | 2532 | if store_history: |
|
2531 | 2533 | self.history_manager.store_inputs(self.execution_count, |
|
2532 | 2534 | cell, raw_cell) |
|
2533 | 2535 | if not silent: |
|
2534 | 2536 | self.logger.log(cell, raw_cell) |
|
2535 | 2537 | |
|
2536 | 2538 | if not prefilter_failed: |
|
2537 | 2539 | # don't run if prefilter failed |
|
2538 | 2540 | cell_name = self.compile.cache(cell, self.execution_count) |
|
2539 | 2541 | |
|
2540 | 2542 | with self.display_trap: |
|
2541 | 2543 | try: |
|
2542 | 2544 | code_ast = self.compile.ast_parse(cell, |
|
2543 | 2545 | filename=cell_name) |
|
2544 | 2546 | except IndentationError: |
|
2545 | 2547 | self.showindentationerror() |
|
2546 | 2548 | if store_history: |
|
2547 | 2549 | self.execution_count += 1 |
|
2548 | 2550 | return None |
|
2549 | 2551 | except (OverflowError, SyntaxError, ValueError, TypeError, |
|
2550 | 2552 | MemoryError): |
|
2551 | 2553 | self.showsyntaxerror() |
|
2552 | 2554 | if store_history: |
|
2553 | 2555 | self.execution_count += 1 |
|
2554 | 2556 | return None |
|
2555 | 2557 | |
|
2556 | 2558 | interactivity = "none" if silent else "last_expr" |
|
2557 | 2559 | self.run_ast_nodes(code_ast.body, cell_name, |
|
2558 | 2560 | interactivity=interactivity) |
|
2559 | 2561 | |
|
2560 | 2562 | # Execute any registered post-execution functions. |
|
2561 | 2563 | # unless we are silent |
|
2562 | 2564 | post_exec = [] if silent else self._post_execute.iteritems() |
|
2563 | 2565 | |
|
2564 | 2566 | for func, status in post_exec: |
|
2565 | 2567 | if self.disable_failing_post_execute and not status: |
|
2566 | 2568 | continue |
|
2567 | 2569 | try: |
|
2568 | 2570 | func() |
|
2569 | 2571 | except KeyboardInterrupt: |
|
2570 | 2572 | print >> io.stderr, "\nKeyboardInterrupt" |
|
2571 | 2573 | except Exception: |
|
2572 | 2574 | # register as failing: |
|
2573 | 2575 | self._post_execute[func] = False |
|
2574 | 2576 | self.showtraceback() |
|
2575 | 2577 | print >> io.stderr, '\n'.join([ |
|
2576 | 2578 | "post-execution function %r produced an error." % func, |
|
2577 | 2579 | "If this problem persists, you can disable failing post-exec functions with:", |
|
2578 | 2580 | "", |
|
2579 | 2581 | " get_ipython().disable_failing_post_execute = True" |
|
2580 | 2582 | ]) |
|
2581 | 2583 | |
|
2582 | 2584 | if store_history: |
|
2583 | 2585 | # Write output to the database. Does nothing unless |
|
2584 | 2586 | # history output logging is enabled. |
|
2585 | 2587 | self.history_manager.store_output(self.execution_count) |
|
2586 | 2588 | # Each cell is a *single* input, regardless of how many lines it has |
|
2587 | 2589 | self.execution_count += 1 |
|
2588 | 2590 | |
|
2589 | 2591 | def run_ast_nodes(self, nodelist, cell_name, interactivity='last_expr'): |
|
2590 | 2592 | """Run a sequence of AST nodes. The execution mode depends on the |
|
2591 | 2593 | interactivity parameter. |
|
2592 | 2594 | |
|
2593 | 2595 | Parameters |
|
2594 | 2596 | ---------- |
|
2595 | 2597 | nodelist : list |
|
2596 | 2598 | A sequence of AST nodes to run. |
|
2597 | 2599 | cell_name : str |
|
2598 | 2600 | Will be passed to the compiler as the filename of the cell. Typically |
|
2599 | 2601 | the value returned by ip.compile.cache(cell). |
|
2600 | 2602 | interactivity : str |
|
2601 | 2603 | 'all', 'last', 'last_expr' or 'none', specifying which nodes should be |
|
2602 | 2604 | run interactively (displaying output from expressions). 'last_expr' |
|
2603 | 2605 | will run the last node interactively only if it is an expression (i.e. |
|
2604 | 2606 | expressions in loops or other blocks are not displayed. Other values |
|
2605 | 2607 | for this parameter will raise a ValueError. |
|
2606 | 2608 | """ |
|
2607 | 2609 | if not nodelist: |
|
2608 | 2610 | return |
|
2609 | 2611 | |
|
2610 | 2612 | if interactivity == 'last_expr': |
|
2611 | 2613 | if isinstance(nodelist[-1], ast.Expr): |
|
2612 | 2614 | interactivity = "last" |
|
2613 | 2615 | else: |
|
2614 | 2616 | interactivity = "none" |
|
2615 | 2617 | |
|
2616 | 2618 | if interactivity == 'none': |
|
2617 | 2619 | to_run_exec, to_run_interactive = nodelist, [] |
|
2618 | 2620 | elif interactivity == 'last': |
|
2619 | 2621 | to_run_exec, to_run_interactive = nodelist[:-1], nodelist[-1:] |
|
2620 | 2622 | elif interactivity == 'all': |
|
2621 | 2623 | to_run_exec, to_run_interactive = [], nodelist |
|
2622 | 2624 | else: |
|
2623 | 2625 | raise ValueError("Interactivity was %r" % interactivity) |
|
2624 | 2626 | |
|
2625 | 2627 | exec_count = self.execution_count |
|
2626 | 2628 | |
|
2627 | 2629 | try: |
|
2628 | 2630 | for i, node in enumerate(to_run_exec): |
|
2629 | 2631 | mod = ast.Module([node]) |
|
2630 | 2632 | code = self.compile(mod, cell_name, "exec") |
|
2631 | 2633 | if self.run_code(code): |
|
2632 | 2634 | return True |
|
2633 | 2635 | |
|
2634 | 2636 | for i, node in enumerate(to_run_interactive): |
|
2635 | 2637 | mod = ast.Interactive([node]) |
|
2636 | 2638 | code = self.compile(mod, cell_name, "single") |
|
2637 | 2639 | if self.run_code(code): |
|
2638 | 2640 | return True |
|
2639 | 2641 | |
|
2640 | 2642 | # Flush softspace |
|
2641 | 2643 | if softspace(sys.stdout, 0): |
|
2642 | 2644 | |
|
2643 | 2645 | |
|
2644 | 2646 | except: |
|
2645 | 2647 | # It's possible to have exceptions raised here, typically by |
|
2646 | 2648 | # compilation of odd code (such as a naked 'return' outside a |
|
2647 | 2649 | # function) that did parse but isn't valid. Typically the exception |
|
2648 | 2650 | # is a SyntaxError, but it's safest just to catch anything and show |
|
2649 | 2651 | # the user a traceback. |
|
2650 | 2652 | |
|
2651 | 2653 | # We do only one try/except outside the loop to minimize the impact |
|
2652 | 2654 | # on runtime, and also because if any node in the node list is |
|
2653 | 2655 | # broken, we should stop execution completely. |
|
2654 | 2656 | self.showtraceback() |
|
2655 | 2657 | |
|
2656 | 2658 | return False |
|
2657 | 2659 | |
|
2658 | 2660 | def run_code(self, code_obj): |
|
2659 | 2661 | """Execute a code object. |
|
2660 | 2662 | |
|
2661 | 2663 | When an exception occurs, self.showtraceback() is called to display a |
|
2662 | 2664 | traceback. |
|
2663 | 2665 | |
|
2664 | 2666 | Parameters |
|
2665 | 2667 | ---------- |
|
2666 | 2668 | code_obj : code object |
|
2667 | 2669 | A compiled code object, to be executed |
|
2668 | 2670 | |
|
2669 | 2671 | Returns |
|
2670 | 2672 | ------- |
|
2671 | 2673 | False : successful execution. |
|
2672 | 2674 | True : an error occurred. |
|
2673 | 2675 | """ |
|
2674 | 2676 | |
|
2675 | 2677 | # Set our own excepthook in case the user code tries to call it |
|
2676 | 2678 | # directly, so that the IPython crash handler doesn't get triggered |
|
2677 | 2679 | old_excepthook,sys.excepthook = sys.excepthook, self.excepthook |
|
2678 | 2680 | |
|
2679 | 2681 | # we save the original sys.excepthook in the instance, in case config |
|
2680 | 2682 | # code (such as magics) needs access to it. |
|
2681 | 2683 | self.sys_excepthook = old_excepthook |
|
2682 | 2684 | outflag = 1 # happens in more places, so it's easier as default |
|
2683 | 2685 | try: |
|
2684 | 2686 | try: |
|
2685 | 2687 | self.hooks.pre_run_code_hook() |
|
2686 | 2688 | #rprint('Running code', repr(code_obj)) # dbg |
|
2687 | 2689 | exec code_obj in self.user_global_ns, self.user_ns |
|
2688 | 2690 | finally: |
|
2689 | 2691 | # Reset our crash handler in place |
|
2690 | 2692 | sys.excepthook = old_excepthook |
|
2691 | 2693 | except SystemExit: |
|
2692 | 2694 | self.showtraceback(exception_only=True) |
|
2693 | 2695 | warn("To exit: use 'exit', 'quit', or Ctrl-D.", level=1) |
|
2694 | 2696 | except self.custom_exceptions: |
|
2695 | 2697 | etype,value,tb = sys.exc_info() |
|
2696 | 2698 | self.CustomTB(etype,value,tb) |
|
2697 | 2699 | except: |
|
2698 | 2700 | self.showtraceback() |
|
2699 | 2701 | else: |
|
2700 | 2702 | outflag = 0 |
|
2701 | 2703 | return outflag |
|
2702 | 2704 | |
|
2703 | 2705 | # For backwards compatibility |
|
2704 | 2706 | runcode = run_code |
|
2705 | 2707 | |
|
2706 | 2708 | #------------------------------------------------------------------------- |
|
2707 | 2709 | # Things related to GUI support and pylab |
|
2708 | 2710 | #------------------------------------------------------------------------- |
|
2709 | 2711 | |
|
2710 | 2712 | def enable_gui(self, gui=None): |
|
2711 | 2713 | raise NotImplementedError('Implement enable_gui in a subclass') |
|
2712 | 2714 | |
|
2713 | 2715 | def enable_pylab(self, gui=None, import_all=True): |
|
2714 | 2716 | """Activate pylab support at runtime. |
|
2715 | 2717 | |
|
2716 | 2718 | This turns on support for matplotlib, preloads into the interactive |
|
2717 | 2719 | namespace all of numpy and pylab, and configures IPython to correctly |
|
2718 | 2720 | interact with the GUI event loop. The GUI backend to be used can be |
|
2719 | 2721 | optionally selected with the optional :param:`gui` argument. |
|
2720 | 2722 | |
|
2721 | 2723 | Parameters |
|
2722 | 2724 | ---------- |
|
2723 | 2725 | gui : optional, string |
|
2724 | 2726 | |
|
2725 | 2727 | If given, dictates the choice of matplotlib GUI backend to use |
|
2726 | 2728 | (should be one of IPython's supported backends, 'qt', 'osx', 'tk', |
|
2727 | 2729 | 'gtk', 'wx' or 'inline'), otherwise we use the default chosen by |
|
2728 | 2730 | matplotlib (as dictated by the matplotlib build-time options plus the |
|
2729 | 2731 | user's matplotlibrc configuration file). Note that not all backends |
|
2730 | 2732 | make sense in all contexts, for example a terminal ipython can't |
|
2731 | 2733 | display figures inline. |
|
2732 | 2734 | """ |
|
2733 | 2735 | from IPython.core.pylabtools import mpl_runner |
|
2734 | 2736 | # We want to prevent the loading of pylab to pollute the user's |
|
2735 | 2737 | # namespace as shown by the %who* magics, so we execute the activation |
|
2736 | 2738 | # code in an empty namespace, and we update *both* user_ns and |
|
2737 | 2739 | # user_ns_hidden with this information. |
|
2738 | 2740 | ns = {} |
|
2739 | 2741 | try: |
|
2740 | 2742 | gui = pylab_activate(ns, gui, import_all, self) |
|
2741 | 2743 | except KeyError: |
|
2742 | 2744 | error("Backend %r not supported" % gui) |
|
2743 | 2745 | return |
|
2744 | 2746 | self.user_ns.update(ns) |
|
2745 | 2747 | self.user_ns_hidden.update(ns) |
|
2746 | 2748 | # Now we must activate the gui pylab wants to use, and fix %run to take |
|
2747 | 2749 | # plot updates into account |
|
2748 | 2750 | self.enable_gui(gui) |
|
2749 | 2751 | self.magics_manager.registry['ExecutionMagics'].default_runner = \ |
|
2750 | 2752 | mpl_runner(self.safe_execfile) |
|
2751 | 2753 | |
|
2752 | 2754 | #------------------------------------------------------------------------- |
|
2753 | 2755 | # Utilities |
|
2754 | 2756 | #------------------------------------------------------------------------- |
|
2755 | 2757 | |
|
2756 | 2758 | def var_expand(self, cmd, depth=0, formatter=DollarFormatter()): |
|
2757 | 2759 | """Expand python variables in a string. |
|
2758 | 2760 | |
|
2759 | 2761 | The depth argument indicates how many frames above the caller should |
|
2760 | 2762 | be walked to look for the local namespace where to expand variables. |
|
2761 | 2763 | |
|
2762 | 2764 | The global namespace for expansion is always the user's interactive |
|
2763 | 2765 | namespace. |
|
2764 | 2766 | """ |
|
2765 | 2767 | ns = self.user_ns.copy() |
|
2766 | 2768 | ns.update(sys._getframe(depth+1).f_locals) |
|
2767 | 2769 | ns.pop('self', None) |
|
2768 | 2770 | try: |
|
2769 | 2771 | cmd = formatter.format(cmd, **ns) |
|
2770 | 2772 | except Exception: |
|
2771 | 2773 | # if formatter couldn't format, just let it go untransformed |
|
2772 | 2774 | pass |
|
2773 | 2775 | return cmd |
|
2774 | 2776 | |
|
2775 | 2777 | def mktempfile(self, data=None, prefix='ipython_edit_'): |
|
2776 | 2778 | """Make a new tempfile and return its filename. |
|
2777 | 2779 | |
|
2778 | 2780 | This makes a call to tempfile.mktemp, but it registers the created |
|
2779 | 2781 | filename internally so ipython cleans it up at exit time. |
|
2780 | 2782 | |
|
2781 | 2783 | Optional inputs: |
|
2782 | 2784 | |
|
2783 | 2785 | - data(None): if data is given, it gets written out to the temp file |
|
2784 | 2786 | immediately, and the file is closed again.""" |
|
2785 | 2787 | |
|
2786 | 2788 | filename = tempfile.mktemp('.py', prefix) |
|
2787 | 2789 | self.tempfiles.append(filename) |
|
2788 | 2790 | |
|
2789 | 2791 | if data: |
|
2790 | 2792 | tmp_file = open(filename,'w') |
|
2791 | 2793 | tmp_file.write(data) |
|
2792 | 2794 | tmp_file.close() |
|
2793 | 2795 | return filename |
|
2794 | 2796 | |
|
2795 | 2797 | # TODO: This should be removed when Term is refactored. |
|
2796 | 2798 | def write(self,data): |
|
2797 | 2799 | """Write a string to the default output""" |
|
2798 | 2800 | io.stdout.write(data) |
|
2799 | 2801 | |
|
2800 | 2802 | # TODO: This should be removed when Term is refactored. |
|
2801 | 2803 | def write_err(self,data): |
|
2802 | 2804 | """Write a string to the default error output""" |
|
2803 | 2805 | io.stderr.write(data) |
|
2804 | 2806 | |
|
2805 | 2807 | def ask_yes_no(self, prompt, default=None): |
|
2806 | 2808 | if self.quiet: |
|
2807 | 2809 | return True |
|
2808 | 2810 | return ask_yes_no(prompt,default) |
|
2809 | 2811 | |
|
2810 | 2812 | def show_usage(self): |
|
2811 | 2813 | """Show a usage message""" |
|
2812 | 2814 | page.page(IPython.core.usage.interactive_usage) |
|
2813 | 2815 | |
|
2814 | 2816 | def extract_input_lines(self, range_str, raw=False): |
|
2815 | 2817 | """Return as a string a set of input history slices. |
|
2816 | 2818 | |
|
2817 | 2819 | Parameters |
|
2818 | 2820 | ---------- |
|
2819 | 2821 | range_str : string |
|
2820 | 2822 | The set of slices is given as a string, like "~5/6-~4/2 4:8 9", |
|
2821 | 2823 | since this function is for use by magic functions which get their |
|
2822 | 2824 | arguments as strings. The number before the / is the session |
|
2823 | 2825 | number: ~n goes n back from the current session. |
|
2824 | 2826 | |
|
2825 | 2827 | Optional Parameters: |
|
2826 | 2828 | - raw(False): by default, the processed input is used. If this is |
|
2827 | 2829 | true, the raw input history is used instead. |
|
2828 | 2830 | |
|
2829 | 2831 | Note that slices can be called with two notations: |
|
2830 | 2832 | |
|
2831 | 2833 | N:M -> standard python form, means including items N...(M-1). |
|
2832 | 2834 | |
|
2833 | 2835 | N-M -> include items N..M (closed endpoint).""" |
|
2834 | 2836 | lines = self.history_manager.get_range_by_str(range_str, raw=raw) |
|
2835 | 2837 | return "\n".join(x for _, _, x in lines) |
|
2836 | 2838 | |
|
2837 | 2839 | def find_user_code(self, target, raw=True, py_only=False): |
|
2838 | 2840 | """Get a code string from history, file, url, or a string or macro. |
|
2839 | 2841 | |
|
2840 | 2842 | This is mainly used by magic functions. |
|
2841 | 2843 | |
|
2842 | 2844 | Parameters |
|
2843 | 2845 | ---------- |
|
2844 | 2846 | |
|
2845 | 2847 | target : str |
|
2846 | 2848 | |
|
2847 | 2849 | A string specifying code to retrieve. This will be tried respectively |
|
2848 | 2850 | as: ranges of input history (see %history for syntax), url, |
|
2849 | 2851 | correspnding .py file, filename, or an expression evaluating to a |
|
2850 | 2852 | string or Macro in the user namespace. |
|
2851 | 2853 | |
|
2852 | 2854 | raw : bool |
|
2853 | 2855 | If true (default), retrieve raw history. Has no effect on the other |
|
2854 | 2856 | retrieval mechanisms. |
|
2855 | 2857 | |
|
2856 | 2858 | py_only : bool (default False) |
|
2857 | 2859 | Only try to fetch python code, do not try alternative methods to decode file |
|
2858 | 2860 | if unicode fails. |
|
2859 | 2861 | |
|
2860 | 2862 | Returns |
|
2861 | 2863 | ------- |
|
2862 | 2864 | A string of code. |
|
2863 | 2865 | |
|
2864 | 2866 | ValueError is raised if nothing is found, and TypeError if it evaluates |
|
2865 | 2867 | to an object of another type. In each case, .args[0] is a printable |
|
2866 | 2868 | message. |
|
2867 | 2869 | """ |
|
2868 | 2870 | code = self.extract_input_lines(target, raw=raw) # Grab history |
|
2869 | 2871 | if code: |
|
2870 | 2872 | return code |
|
2871 | 2873 | utarget = unquote_filename(target) |
|
2872 | 2874 | try: |
|
2873 | 2875 | if utarget.startswith(('http://', 'https://')): |
|
2874 | 2876 | return openpy.read_py_url(utarget, skip_encoding_cookie=True) |
|
2875 | 2877 | except UnicodeDecodeError: |
|
2876 | 2878 | if not py_only : |
|
2877 | 2879 | response = urllib.urlopen(target) |
|
2878 | 2880 | return response.read().decode('latin1') |
|
2879 | 2881 | raise ValueError(("'%s' seem to be unreadable.") % utarget) |
|
2880 | 2882 | |
|
2881 | 2883 | potential_target = [target] |
|
2882 | 2884 | try : |
|
2883 | 2885 | potential_target.insert(0,get_py_filename(target)) |
|
2884 | 2886 | except IOError: |
|
2885 | 2887 | pass |
|
2886 | 2888 | |
|
2887 | 2889 | for tgt in potential_target : |
|
2888 | 2890 | if os.path.isfile(tgt): # Read file |
|
2889 | 2891 | try : |
|
2890 | 2892 | return openpy.read_py_file(tgt, skip_encoding_cookie=True) |
|
2891 | 2893 | except UnicodeDecodeError : |
|
2892 | 2894 | if not py_only : |
|
2893 | 2895 | with io_open(tgt,'r', encoding='latin1') as f : |
|
2894 | 2896 | return f.read() |
|
2895 | 2897 | raise ValueError(("'%s' seem to be unreadable.") % target) |
|
2896 | 2898 | |
|
2897 | 2899 | try: # User namespace |
|
2898 | 2900 | codeobj = eval(target, self.user_ns) |
|
2899 | 2901 | except Exception: |
|
2900 | 2902 | raise ValueError(("'%s' was not found in history, as a file, url, " |
|
2901 | 2903 | "nor in the user namespace.") % target) |
|
2902 | 2904 | if isinstance(codeobj, basestring): |
|
2903 | 2905 | return codeobj |
|
2904 | 2906 | elif isinstance(codeobj, Macro): |
|
2905 | 2907 | return codeobj.value |
|
2906 | 2908 | |
|
2907 | 2909 | raise TypeError("%s is neither a string nor a macro." % target, |
|
2908 | 2910 | codeobj) |
|
2909 | 2911 | |
|
2910 | 2912 | #------------------------------------------------------------------------- |
|
2911 | 2913 | # Things related to IPython exiting |
|
2912 | 2914 | #------------------------------------------------------------------------- |
|
2913 | 2915 | def atexit_operations(self): |
|
2914 | 2916 | """This will be executed at the time of exit. |
|
2915 | 2917 | |
|
2916 | 2918 | Cleanup operations and saving of persistent data that is done |
|
2917 | 2919 | unconditionally by IPython should be performed here. |
|
2918 | 2920 | |
|
2919 | 2921 | For things that may depend on startup flags or platform specifics (such |
|
2920 | 2922 | as having readline or not), register a separate atexit function in the |
|
2921 | 2923 | code that has the appropriate information, rather than trying to |
|
2922 | 2924 | clutter |
|
2923 | 2925 | """ |
|
2924 | 2926 | # Close the history session (this stores the end time and line count) |
|
2925 | 2927 | # this must be *before* the tempfile cleanup, in case of temporary |
|
2926 | 2928 | # history db |
|
2927 | 2929 | self.history_manager.end_session() |
|
2928 | 2930 | |
|
2929 | 2931 | # Cleanup all tempfiles left around |
|
2930 | 2932 | for tfile in self.tempfiles: |
|
2931 | 2933 | try: |
|
2932 | 2934 | os.unlink(tfile) |
|
2933 | 2935 | except OSError: |
|
2934 | 2936 | pass |
|
2935 | 2937 | |
|
2936 | 2938 | # Clear all user namespaces to release all references cleanly. |
|
2937 | 2939 | self.reset(new_session=False) |
|
2938 | 2940 | |
|
2939 | 2941 | # Run user hooks |
|
2940 | 2942 | self.hooks.shutdown_hook() |
|
2941 | 2943 | |
|
2942 | 2944 | def cleanup(self): |
|
2943 | 2945 | self.restore_sys_module_state() |
|
2944 | 2946 | |
|
2945 | 2947 | |
|
2946 | 2948 | class InteractiveShellABC(object): |
|
2947 | 2949 | """An abstract base class for InteractiveShell.""" |
|
2948 | 2950 | __metaclass__ = abc.ABCMeta |
|
2949 | 2951 | |
|
2950 | 2952 | InteractiveShellABC.register(InteractiveShell) |
@@ -1,710 +1,745 b'' | |||
|
1 | 1 | # -*- coding: utf-8 -*- |
|
2 | 2 | """Tests for the inputsplitter module. |
|
3 | 3 | |
|
4 | 4 | Authors |
|
5 | 5 | ------- |
|
6 | 6 | * Fernando Perez |
|
7 | 7 | * Robert Kern |
|
8 | 8 | """ |
|
9 | 9 | #----------------------------------------------------------------------------- |
|
10 | 10 | # Copyright (C) 2010-2011 The IPython Development Team |
|
11 | 11 | # |
|
12 | 12 | # Distributed under the terms of the BSD License. The full license is in |
|
13 | 13 | # the file COPYING, distributed as part of this software. |
|
14 | 14 | #----------------------------------------------------------------------------- |
|
15 | 15 | |
|
16 | 16 | #----------------------------------------------------------------------------- |
|
17 | 17 | # Imports |
|
18 | 18 | #----------------------------------------------------------------------------- |
|
19 | 19 | # stdlib |
|
20 | 20 | import unittest |
|
21 | 21 | import sys |
|
22 | 22 | |
|
23 | 23 | # Third party |
|
24 | 24 | import nose.tools as nt |
|
25 | 25 | |
|
26 | 26 | # Our own |
|
27 | 27 | from IPython.core import inputsplitter as isp |
|
28 | 28 | from IPython.testing import tools as tt |
|
29 | 29 | from IPython.utils import py3compat |
|
30 | 30 | |
|
31 | 31 | #----------------------------------------------------------------------------- |
|
32 | 32 | # Semi-complete examples (also used as tests) |
|
33 | 33 | #----------------------------------------------------------------------------- |
|
34 | 34 | |
|
35 | 35 | # Note: at the bottom, there's a slightly more complete version of this that |
|
36 | 36 | # can be useful during development of code here. |
|
37 | 37 | |
|
38 | 38 | def mini_interactive_loop(input_func): |
|
39 | 39 | """Minimal example of the logic of an interactive interpreter loop. |
|
40 | 40 | |
|
41 | 41 | This serves as an example, and it is used by the test system with a fake |
|
42 | 42 | raw_input that simulates interactive input.""" |
|
43 | 43 | |
|
44 | 44 | from IPython.core.inputsplitter import InputSplitter |
|
45 | 45 | |
|
46 | 46 | isp = InputSplitter() |
|
47 | 47 | # In practice, this input loop would be wrapped in an outside loop to read |
|
48 | 48 | # input indefinitely, until some exit/quit command was issued. Here we |
|
49 | 49 | # only illustrate the basic inner loop. |
|
50 | 50 | while isp.push_accepts_more(): |
|
51 | 51 | indent = ' '*isp.indent_spaces |
|
52 | 52 | prompt = '>>> ' + indent |
|
53 | 53 | line = indent + input_func(prompt) |
|
54 | 54 | isp.push(line) |
|
55 | 55 | |
|
56 | 56 | # Here we just return input so we can use it in a test suite, but a real |
|
57 | 57 | # interpreter would instead send it for execution somewhere. |
|
58 | 58 | src = isp.source_reset() |
|
59 | 59 | #print 'Input source was:\n', src # dbg |
|
60 | 60 | return src |
|
61 | 61 | |
|
62 | 62 | #----------------------------------------------------------------------------- |
|
63 | 63 | # Test utilities, just for local use |
|
64 | 64 | #----------------------------------------------------------------------------- |
|
65 | 65 | |
|
66 | 66 | def assemble(block): |
|
67 | 67 | """Assemble a block into multi-line sub-blocks.""" |
|
68 | 68 | return ['\n'.join(sub_block)+'\n' for sub_block in block] |
|
69 | 69 | |
|
70 | 70 | |
|
71 | 71 | def pseudo_input(lines): |
|
72 | 72 | """Return a function that acts like raw_input but feeds the input list.""" |
|
73 | 73 | ilines = iter(lines) |
|
74 | 74 | def raw_in(prompt): |
|
75 | 75 | try: |
|
76 | 76 | return next(ilines) |
|
77 | 77 | except StopIteration: |
|
78 | 78 | return '' |
|
79 | 79 | return raw_in |
|
80 | 80 | |
|
81 | 81 | #----------------------------------------------------------------------------- |
|
82 | 82 | # Tests |
|
83 | 83 | #----------------------------------------------------------------------------- |
|
84 | 84 | def test_spaces(): |
|
85 | 85 | tests = [('', 0), |
|
86 | 86 | (' ', 1), |
|
87 | 87 | ('\n', 0), |
|
88 | 88 | (' \n', 1), |
|
89 | 89 | ('x', 0), |
|
90 | 90 | (' x', 1), |
|
91 | 91 | (' x',2), |
|
92 | 92 | (' x',4), |
|
93 | 93 | # Note: tabs are counted as a single whitespace! |
|
94 | 94 | ('\tx', 1), |
|
95 | 95 | ('\t x', 2), |
|
96 | 96 | ] |
|
97 | 97 | tt.check_pairs(isp.num_ini_spaces, tests) |
|
98 | 98 | |
|
99 | 99 | |
|
100 | 100 | def test_remove_comments(): |
|
101 | 101 | tests = [('text', 'text'), |
|
102 | 102 | ('text # comment', 'text '), |
|
103 | 103 | ('text # comment\n', 'text \n'), |
|
104 | 104 | ('text # comment \n', 'text \n'), |
|
105 | 105 | ('line # c \nline\n','line \nline\n'), |
|
106 | 106 | ('line # c \nline#c2 \nline\nline #c\n\n', |
|
107 | 107 | 'line \nline\nline\nline \n\n'), |
|
108 | 108 | ] |
|
109 | 109 | tt.check_pairs(isp.remove_comments, tests) |
|
110 | 110 | |
|
111 | 111 | def test_has_comment(): |
|
112 | 112 | tests = [('text', False), |
|
113 | 113 | ('text #comment', True), |
|
114 | 114 | ('text #comment\n', True), |
|
115 | 115 | ('#comment', True), |
|
116 | 116 | ('#comment\n', True), |
|
117 | 117 | ('a = "#string"', False), |
|
118 | 118 | ('a = "#string" # comment', True), |
|
119 | 119 | ('a #comment not "string"', True), |
|
120 | 120 | ] |
|
121 | 121 | tt.check_pairs(isp.has_comment, tests) |
|
122 | 122 | |
|
123 | 123 | |
|
124 | 124 | def test_get_input_encoding(): |
|
125 | 125 | encoding = isp.get_input_encoding() |
|
126 | 126 | nt.assert_true(isinstance(encoding, basestring)) |
|
127 | 127 | # simple-minded check that at least encoding a simple string works with the |
|
128 | 128 | # encoding we got. |
|
129 | 129 | nt.assert_equal(u'test'.encode(encoding), b'test') |
|
130 | 130 | |
|
131 | 131 | |
|
132 | 132 | class NoInputEncodingTestCase(unittest.TestCase): |
|
133 | 133 | def setUp(self): |
|
134 | 134 | self.old_stdin = sys.stdin |
|
135 | 135 | class X: pass |
|
136 | 136 | fake_stdin = X() |
|
137 | 137 | sys.stdin = fake_stdin |
|
138 | 138 | |
|
139 | 139 | def test(self): |
|
140 | 140 | # Verify that if sys.stdin has no 'encoding' attribute we do the right |
|
141 | 141 | # thing |
|
142 | 142 | enc = isp.get_input_encoding() |
|
143 | 143 | self.assertEqual(enc, 'ascii') |
|
144 | 144 | |
|
145 | 145 | def tearDown(self): |
|
146 | 146 | sys.stdin = self.old_stdin |
|
147 | 147 | |
|
148 | 148 | |
|
149 | 149 | class InputSplitterTestCase(unittest.TestCase): |
|
150 | 150 | def setUp(self): |
|
151 | 151 | self.isp = isp.InputSplitter() |
|
152 | 152 | |
|
153 | 153 | def test_reset(self): |
|
154 | 154 | isp = self.isp |
|
155 | 155 | isp.push('x=1') |
|
156 | 156 | isp.reset() |
|
157 | 157 | self.assertEqual(isp._buffer, []) |
|
158 | 158 | self.assertEqual(isp.indent_spaces, 0) |
|
159 | 159 | self.assertEqual(isp.source, '') |
|
160 | 160 | self.assertEqual(isp.code, None) |
|
161 | 161 | self.assertEqual(isp._is_complete, False) |
|
162 | 162 | |
|
163 | 163 | def test_source(self): |
|
164 | 164 | self.isp._store('1') |
|
165 | 165 | self.isp._store('2') |
|
166 | 166 | self.assertEqual(self.isp.source, '1\n2\n') |
|
167 | 167 | self.assertTrue(len(self.isp._buffer)>0) |
|
168 | 168 | self.assertEqual(self.isp.source_reset(), '1\n2\n') |
|
169 | 169 | self.assertEqual(self.isp._buffer, []) |
|
170 | 170 | self.assertEqual(self.isp.source, '') |
|
171 | 171 | |
|
172 | 172 | def test_indent(self): |
|
173 | 173 | isp = self.isp # shorthand |
|
174 | 174 | isp.push('x=1') |
|
175 | 175 | self.assertEqual(isp.indent_spaces, 0) |
|
176 | 176 | isp.push('if 1:\n x=1') |
|
177 | 177 | self.assertEqual(isp.indent_spaces, 4) |
|
178 | 178 | isp.push('y=2\n') |
|
179 | 179 | self.assertEqual(isp.indent_spaces, 0) |
|
180 | 180 | |
|
181 | 181 | def test_indent2(self): |
|
182 | 182 | # In cell mode, inputs must be fed in whole blocks, so skip this test |
|
183 | 183 | if self.isp.input_mode == 'cell': return |
|
184 | 184 | |
|
185 | 185 | isp = self.isp |
|
186 | 186 | isp.push('if 1:') |
|
187 | 187 | self.assertEqual(isp.indent_spaces, 4) |
|
188 | 188 | isp.push(' x=1') |
|
189 | 189 | self.assertEqual(isp.indent_spaces, 4) |
|
190 | 190 | # Blank lines shouldn't change the indent level |
|
191 | 191 | isp.push(' '*2) |
|
192 | 192 | self.assertEqual(isp.indent_spaces, 4) |
|
193 | 193 | |
|
194 | 194 | def test_indent3(self): |
|
195 | 195 | # In cell mode, inputs must be fed in whole blocks, so skip this test |
|
196 | 196 | if self.isp.input_mode == 'cell': return |
|
197 | 197 | |
|
198 | 198 | isp = self.isp |
|
199 | 199 | # When a multiline statement contains parens or multiline strings, we |
|
200 | 200 | # shouldn't get confused. |
|
201 | 201 | isp.push("if 1:") |
|
202 | 202 | isp.push(" x = (1+\n 2)") |
|
203 | 203 | self.assertEqual(isp.indent_spaces, 4) |
|
204 | 204 | |
|
205 | 205 | def test_indent4(self): |
|
206 | 206 | # In cell mode, inputs must be fed in whole blocks, so skip this test |
|
207 | 207 | if self.isp.input_mode == 'cell': return |
|
208 | 208 | |
|
209 | 209 | isp = self.isp |
|
210 | 210 | # whitespace after ':' should not screw up indent level |
|
211 | 211 | isp.push('if 1: \n x=1') |
|
212 | 212 | self.assertEqual(isp.indent_spaces, 4) |
|
213 | 213 | isp.push('y=2\n') |
|
214 | 214 | self.assertEqual(isp.indent_spaces, 0) |
|
215 | 215 | isp.push('if 1:\t\n x=1') |
|
216 | 216 | self.assertEqual(isp.indent_spaces, 4) |
|
217 | 217 | isp.push('y=2\n') |
|
218 | 218 | self.assertEqual(isp.indent_spaces, 0) |
|
219 | 219 | |
|
220 | 220 | def test_dedent_pass(self): |
|
221 | 221 | isp = self.isp # shorthand |
|
222 | 222 | # should NOT cause dedent |
|
223 | 223 | isp.push('if 1:\n passes = 5') |
|
224 | 224 | self.assertEqual(isp.indent_spaces, 4) |
|
225 | 225 | isp.push('if 1:\n pass') |
|
226 | 226 | self.assertEqual(isp.indent_spaces, 0) |
|
227 | 227 | isp.push('if 1:\n pass ') |
|
228 | 228 | self.assertEqual(isp.indent_spaces, 0) |
|
229 | 229 | |
|
230 | 230 | def test_dedent_raise(self): |
|
231 | 231 | isp = self.isp # shorthand |
|
232 | 232 | # should NOT cause dedent |
|
233 | 233 | isp.push('if 1:\n raised = 4') |
|
234 | 234 | self.assertEqual(isp.indent_spaces, 4) |
|
235 | 235 | isp.push('if 1:\n raise TypeError()') |
|
236 | 236 | self.assertEqual(isp.indent_spaces, 0) |
|
237 | 237 | isp.push('if 1:\n raise') |
|
238 | 238 | self.assertEqual(isp.indent_spaces, 0) |
|
239 | 239 | isp.push('if 1:\n raise ') |
|
240 | 240 | self.assertEqual(isp.indent_spaces, 0) |
|
241 | 241 | |
|
242 | 242 | def test_dedent_return(self): |
|
243 | 243 | isp = self.isp # shorthand |
|
244 | 244 | # should NOT cause dedent |
|
245 | 245 | isp.push('if 1:\n returning = 4') |
|
246 | 246 | self.assertEqual(isp.indent_spaces, 4) |
|
247 | 247 | isp.push('if 1:\n return 5 + 493') |
|
248 | 248 | self.assertEqual(isp.indent_spaces, 0) |
|
249 | 249 | isp.push('if 1:\n return') |
|
250 | 250 | self.assertEqual(isp.indent_spaces, 0) |
|
251 | 251 | isp.push('if 1:\n return ') |
|
252 | 252 | self.assertEqual(isp.indent_spaces, 0) |
|
253 | 253 | isp.push('if 1:\n return(0)') |
|
254 | 254 | self.assertEqual(isp.indent_spaces, 0) |
|
255 | 255 | |
|
256 | 256 | def test_push(self): |
|
257 | 257 | isp = self.isp |
|
258 | 258 | self.assertTrue(isp.push('x=1')) |
|
259 | 259 | |
|
260 | 260 | def test_push2(self): |
|
261 | 261 | isp = self.isp |
|
262 | 262 | self.assertFalse(isp.push('if 1:')) |
|
263 | 263 | for line in [' x=1', '# a comment', ' y=2']: |
|
264 | 264 | self.assertTrue(isp.push(line)) |
|
265 | 265 | |
|
266 | 266 | def test_push3(self): |
|
267 | 267 | isp = self.isp |
|
268 | 268 | isp.push('if True:') |
|
269 | 269 | isp.push(' a = 1') |
|
270 | 270 | self.assertFalse(isp.push('b = [1,')) |
|
271 | 271 | |
|
272 | 272 | def test_replace_mode(self): |
|
273 | 273 | isp = self.isp |
|
274 | 274 | isp.input_mode = 'cell' |
|
275 | 275 | isp.push('x=1') |
|
276 | 276 | self.assertEqual(isp.source, 'x=1\n') |
|
277 | 277 | isp.push('x=2') |
|
278 | 278 | self.assertEqual(isp.source, 'x=2\n') |
|
279 | 279 | |
|
280 | 280 | def test_push_accepts_more(self): |
|
281 | 281 | isp = self.isp |
|
282 | 282 | isp.push('x=1') |
|
283 | 283 | self.assertFalse(isp.push_accepts_more()) |
|
284 | 284 | |
|
285 | 285 | def test_push_accepts_more2(self): |
|
286 | 286 | # In cell mode, inputs must be fed in whole blocks, so skip this test |
|
287 | 287 | if self.isp.input_mode == 'cell': return |
|
288 | 288 | |
|
289 | 289 | isp = self.isp |
|
290 | 290 | isp.push('if 1:') |
|
291 | 291 | self.assertTrue(isp.push_accepts_more()) |
|
292 | 292 | isp.push(' x=1') |
|
293 | 293 | self.assertTrue(isp.push_accepts_more()) |
|
294 | 294 | isp.push('') |
|
295 | 295 | self.assertFalse(isp.push_accepts_more()) |
|
296 | 296 | |
|
297 | 297 | def test_push_accepts_more3(self): |
|
298 | 298 | isp = self.isp |
|
299 | 299 | isp.push("x = (2+\n3)") |
|
300 | 300 | self.assertFalse(isp.push_accepts_more()) |
|
301 | 301 | |
|
302 | 302 | def test_push_accepts_more4(self): |
|
303 | 303 | # In cell mode, inputs must be fed in whole blocks, so skip this test |
|
304 | 304 | if self.isp.input_mode == 'cell': return |
|
305 | 305 | |
|
306 | 306 | isp = self.isp |
|
307 | 307 | # When a multiline statement contains parens or multiline strings, we |
|
308 | 308 | # shouldn't get confused. |
|
309 | 309 | # FIXME: we should be able to better handle de-dents in statements like |
|
310 | 310 | # multiline strings and multiline expressions (continued with \ or |
|
311 | 311 | # parens). Right now we aren't handling the indentation tracking quite |
|
312 | 312 | # correctly with this, though in practice it may not be too much of a |
|
313 | 313 | # problem. We'll need to see. |
|
314 | 314 | isp.push("if 1:") |
|
315 | 315 | isp.push(" x = (2+") |
|
316 | 316 | isp.push(" 3)") |
|
317 | 317 | self.assertTrue(isp.push_accepts_more()) |
|
318 | 318 | isp.push(" y = 3") |
|
319 | 319 | self.assertTrue(isp.push_accepts_more()) |
|
320 | 320 | isp.push('') |
|
321 | 321 | self.assertFalse(isp.push_accepts_more()) |
|
322 | 322 | |
|
323 | 323 | def test_push_accepts_more5(self): |
|
324 | 324 | # In cell mode, inputs must be fed in whole blocks, so skip this test |
|
325 | 325 | if self.isp.input_mode == 'cell': return |
|
326 | 326 | |
|
327 | 327 | isp = self.isp |
|
328 | 328 | isp.push('try:') |
|
329 | 329 | isp.push(' a = 5') |
|
330 | 330 | isp.push('except:') |
|
331 | 331 | isp.push(' raise') |
|
332 | 332 | self.assertTrue(isp.push_accepts_more()) |
|
333 | 333 | |
|
334 | 334 | def test_continuation(self): |
|
335 | 335 | isp = self.isp |
|
336 | 336 | isp.push("import os, \\") |
|
337 | 337 | self.assertTrue(isp.push_accepts_more()) |
|
338 | 338 | isp.push("sys") |
|
339 | 339 | self.assertFalse(isp.push_accepts_more()) |
|
340 | 340 | |
|
341 | 341 | def test_syntax_error(self): |
|
342 | 342 | isp = self.isp |
|
343 | 343 | # Syntax errors immediately produce a 'ready' block, so the invalid |
|
344 | 344 | # Python can be sent to the kernel for evaluation with possible ipython |
|
345 | 345 | # special-syntax conversion. |
|
346 | 346 | isp.push('run foo') |
|
347 | 347 | self.assertFalse(isp.push_accepts_more()) |
|
348 | 348 | |
|
349 | 349 | def test_unicode(self): |
|
350 | 350 | self.isp.push(u"PΓ©rez") |
|
351 | 351 | self.isp.push(u'\xc3\xa9') |
|
352 | 352 | self.isp.push(u"u'\xc3\xa9'") |
|
353 | 353 | |
|
354 | 354 | class InteractiveLoopTestCase(unittest.TestCase): |
|
355 | 355 | """Tests for an interactive loop like a python shell. |
|
356 | 356 | """ |
|
357 | 357 | def check_ns(self, lines, ns): |
|
358 | 358 | """Validate that the given input lines produce the resulting namespace. |
|
359 | 359 | |
|
360 | 360 | Note: the input lines are given exactly as they would be typed in an |
|
361 | 361 | auto-indenting environment, as mini_interactive_loop above already does |
|
362 | 362 | auto-indenting and prepends spaces to the input. |
|
363 | 363 | """ |
|
364 | 364 | src = mini_interactive_loop(pseudo_input(lines)) |
|
365 | 365 | test_ns = {} |
|
366 | 366 | exec src in test_ns |
|
367 | 367 | # We can't check that the provided ns is identical to the test_ns, |
|
368 | 368 | # because Python fills test_ns with extra keys (copyright, etc). But |
|
369 | 369 | # we can check that the given dict is *contained* in test_ns |
|
370 | 370 | for k,v in ns.iteritems(): |
|
371 | 371 | self.assertEqual(test_ns[k], v) |
|
372 | 372 | |
|
373 | 373 | def test_simple(self): |
|
374 | 374 | self.check_ns(['x=1'], dict(x=1)) |
|
375 | 375 | |
|
376 | 376 | def test_simple2(self): |
|
377 | 377 | self.check_ns(['if 1:', 'x=2'], dict(x=2)) |
|
378 | 378 | |
|
379 | 379 | def test_xy(self): |
|
380 | 380 | self.check_ns(['x=1; y=2'], dict(x=1, y=2)) |
|
381 | 381 | |
|
382 | 382 | def test_abc(self): |
|
383 | 383 | self.check_ns(['if 1:','a=1','b=2','c=3'], dict(a=1, b=2, c=3)) |
|
384 | 384 | |
|
385 | 385 | def test_multi(self): |
|
386 | 386 | self.check_ns(['x =(1+','1+','2)'], dict(x=4)) |
|
387 | 387 | |
|
388 | 388 | |
|
389 | 389 | def test_LineInfo(): |
|
390 | 390 | """Simple test for LineInfo construction and str()""" |
|
391 | 391 | linfo = isp.LineInfo(' %cd /home') |
|
392 | 392 | nt.assert_equals(str(linfo), 'LineInfo [ |%|cd|/home]') |
|
393 | 393 | |
|
394 | 394 | # Transformer tests |
|
395 | 395 | def transform_checker(tests, func): |
|
396 | 396 | """Utility to loop over test inputs""" |
|
397 | 397 | for inp, tr in tests: |
|
398 | 398 | nt.assert_equals(func(inp), tr) |
|
399 | 399 | |
|
400 | 400 | # Data for all the syntax tests in the form of lists of pairs of |
|
401 | 401 | # raw/transformed input. We store it here as a global dict so that we can use |
|
402 | 402 | # it both within single-function tests and also to validate the behavior of the |
|
403 | 403 | # larger objects |
|
404 | 404 | |
|
405 | 405 | syntax = \ |
|
406 | 406 | dict(assign_system = |
|
407 | 407 | [(i,py3compat.u_format(o)) for i,o in \ |
|
408 | 408 | [(u'a =! ls', "a = get_ipython().getoutput({u}'ls')"), |
|
409 | 409 | (u'b = !ls', "b = get_ipython().getoutput({u}'ls')"), |
|
410 | 410 | ('x=1', 'x=1'), # normal input is unmodified |
|
411 | 411 | (' ',' '), # blank lines are kept intact |
|
412 | 412 | ]], |
|
413 | 413 | |
|
414 | 414 | assign_magic = |
|
415 | 415 | [(i,py3compat.u_format(o)) for i,o in \ |
|
416 | 416 | [(u'a =% who', "a = get_ipython().magic({u}'who')"), |
|
417 | 417 | (u'b = %who', "b = get_ipython().magic({u}'who')"), |
|
418 | 418 | ('x=1', 'x=1'), # normal input is unmodified |
|
419 | 419 | (' ',' '), # blank lines are kept intact |
|
420 | 420 | ]], |
|
421 | 421 | |
|
422 | 422 | classic_prompt = |
|
423 | 423 | [('>>> x=1', 'x=1'), |
|
424 | 424 | ('x=1', 'x=1'), # normal input is unmodified |
|
425 | 425 | (' ', ' '), # blank lines are kept intact |
|
426 | 426 | ('... ', ''), # continuation prompts |
|
427 | 427 | ], |
|
428 | 428 | |
|
429 | 429 | ipy_prompt = |
|
430 | 430 | [('In [1]: x=1', 'x=1'), |
|
431 | 431 | ('x=1', 'x=1'), # normal input is unmodified |
|
432 | 432 | (' ',' '), # blank lines are kept intact |
|
433 | 433 | (' ....: ', ''), # continuation prompts |
|
434 | 434 | ], |
|
435 | 435 | |
|
436 | 436 | # Tests for the escape transformer to leave normal code alone |
|
437 | 437 | escaped_noesc = |
|
438 | 438 | [ (' ', ' '), |
|
439 | 439 | ('x=1', 'x=1'), |
|
440 | 440 | ], |
|
441 | 441 | |
|
442 | 442 | # System calls |
|
443 | 443 | escaped_shell = |
|
444 | 444 | [(i,py3compat.u_format(o)) for i,o in \ |
|
445 | 445 | [ (u'!ls', "get_ipython().system({u}'ls')"), |
|
446 | 446 | # Double-escape shell, this means to capture the output of the |
|
447 | 447 | # subprocess and return it |
|
448 | 448 | (u'!!ls', "get_ipython().getoutput({u}'ls')"), |
|
449 | 449 | ]], |
|
450 | 450 | |
|
451 | 451 | # Help/object info |
|
452 | 452 | escaped_help = |
|
453 | 453 | [(i,py3compat.u_format(o)) for i,o in \ |
|
454 | 454 | [ (u'?', 'get_ipython().show_usage()'), |
|
455 | 455 | (u'?x1', "get_ipython().magic({u}'pinfo x1')"), |
|
456 | 456 | (u'??x2', "get_ipython().magic({u}'pinfo2 x2')"), |
|
457 | 457 | (u'?a.*s', "get_ipython().magic({u}'psearch a.*s')"), |
|
458 | 458 | (u'?%hist', "get_ipython().magic({u}'pinfo %hist')"), |
|
459 | 459 | (u'?abc = qwe', "get_ipython().magic({u}'pinfo abc')"), |
|
460 | 460 | ]], |
|
461 | 461 | |
|
462 | 462 | end_help = |
|
463 | 463 | [(i,py3compat.u_format(o)) for i,o in \ |
|
464 | 464 | [ (u'x3?', "get_ipython().magic({u}'pinfo x3')"), |
|
465 | 465 | (u'x4??', "get_ipython().magic({u}'pinfo2 x4')"), |
|
466 | 466 | (u'%hist?', "get_ipython().magic({u}'pinfo %hist')"), |
|
467 | 467 | (u'f*?', "get_ipython().magic({u}'psearch f*')"), |
|
468 | 468 | (u'ax.*aspe*?', "get_ipython().magic({u}'psearch ax.*aspe*')"), |
|
469 | 469 | (u'a = abc?', "get_ipython().set_next_input({u}'a = abc');" |
|
470 | 470 | "get_ipython().magic({u}'pinfo abc')"), |
|
471 | 471 | (u'a = abc.qe??', "get_ipython().set_next_input({u}'a = abc.qe');" |
|
472 | 472 | "get_ipython().magic({u}'pinfo2 abc.qe')"), |
|
473 | 473 | (u'a = *.items?', "get_ipython().set_next_input({u}'a = *.items');" |
|
474 | 474 | "get_ipython().magic({u}'psearch *.items')"), |
|
475 | 475 | (u'plot(a?', "get_ipython().set_next_input({u}'plot(a');" |
|
476 | 476 | "get_ipython().magic({u}'pinfo a')"), |
|
477 | 477 | (u'a*2 #comment?', 'a*2 #comment?'), |
|
478 | 478 | ]], |
|
479 | 479 | |
|
480 | 480 | # Explicit magic calls |
|
481 | 481 | escaped_magic = |
|
482 | 482 | [(i,py3compat.u_format(o)) for i,o in \ |
|
483 | 483 | [ (u'%cd', "get_ipython().magic({u}'cd')"), |
|
484 | 484 | (u'%cd /home', "get_ipython().magic({u}'cd /home')"), |
|
485 | 485 | # Backslashes need to be escaped. |
|
486 | 486 | (u'%cd C:\\User', "get_ipython().magic({u}'cd C:\\\\User')"), |
|
487 | 487 | (u' %magic', " get_ipython().magic({u}'magic')"), |
|
488 | 488 | ]], |
|
489 | 489 | |
|
490 | 490 | # Quoting with separate arguments |
|
491 | 491 | escaped_quote = |
|
492 | 492 | [ (',f', 'f("")'), |
|
493 | 493 | (',f x', 'f("x")'), |
|
494 | 494 | (' ,f y', ' f("y")'), |
|
495 | 495 | (',f a b', 'f("a", "b")'), |
|
496 | 496 | ], |
|
497 | 497 | |
|
498 | 498 | # Quoting with single argument |
|
499 | 499 | escaped_quote2 = |
|
500 | 500 | [ (';f', 'f("")'), |
|
501 | 501 | (';f x', 'f("x")'), |
|
502 | 502 | (' ;f y', ' f("y")'), |
|
503 | 503 | (';f a b', 'f("a b")'), |
|
504 | 504 | ], |
|
505 | 505 | |
|
506 | 506 | # Simply apply parens |
|
507 | 507 | escaped_paren = |
|
508 | 508 | [ ('/f', 'f()'), |
|
509 | 509 | ('/f x', 'f(x)'), |
|
510 | 510 | (' /f y', ' f(y)'), |
|
511 | 511 | ('/f a b', 'f(a, b)'), |
|
512 | 512 | ], |
|
513 | 513 | |
|
514 | 514 | # Check that we transform prompts before other transforms |
|
515 | 515 | mixed = |
|
516 | 516 | [(i,py3compat.u_format(o)) for i,o in \ |
|
517 | 517 | [ (u'In [1]: %lsmagic', "get_ipython().magic({u}'lsmagic')"), |
|
518 | 518 | (u'>>> %lsmagic', "get_ipython().magic({u}'lsmagic')"), |
|
519 | 519 | (u'In [2]: !ls', "get_ipython().system({u}'ls')"), |
|
520 | 520 | (u'In [3]: abs?', "get_ipython().magic({u}'pinfo abs')"), |
|
521 | 521 | (u'In [4]: b = %who', "b = get_ipython().magic({u}'who')"), |
|
522 | 522 | ]], |
|
523 | 523 | ) |
|
524 | 524 | |
|
525 | 525 | # multiline syntax examples. Each of these should be a list of lists, with |
|
526 | 526 | # each entry itself having pairs of raw/transformed input. The union (with |
|
527 | 527 | # '\n'.join() of the transformed inputs is what the splitter should produce |
|
528 | 528 | # when fed the raw lines one at a time via push. |
|
529 | 529 | syntax_ml = \ |
|
530 | 530 | dict(classic_prompt = |
|
531 | 531 | [ [('>>> for i in range(10):','for i in range(10):'), |
|
532 | 532 | ('... print i',' print i'), |
|
533 | 533 | ('... ', ''), |
|
534 | 534 | ], |
|
535 | 535 | ], |
|
536 | 536 | |
|
537 | 537 | ipy_prompt = |
|
538 | 538 | [ [('In [24]: for i in range(10):','for i in range(10):'), |
|
539 | 539 | (' ....: print i',' print i'), |
|
540 | 540 | (' ....: ', ''), |
|
541 | 541 | ], |
|
542 | 542 | ], |
|
543 | 543 | |
|
544 | 544 | multiline_datastructure = |
|
545 | 545 | [ [('>>> a = [1,','a = [1,'), |
|
546 | 546 | ('... 2]','2]'), |
|
547 | 547 | ], |
|
548 | 548 | ], |
|
549 | 549 | ) |
|
550 | 550 | |
|
551 | 551 | |
|
552 | 552 | def test_assign_system(): |
|
553 | 553 | tt.check_pairs(isp.transform_assign_system, syntax['assign_system']) |
|
554 | 554 | |
|
555 | 555 | |
|
556 | 556 | def test_assign_magic(): |
|
557 | 557 | tt.check_pairs(isp.transform_assign_magic, syntax['assign_magic']) |
|
558 | 558 | |
|
559 | 559 | |
|
560 | 560 | def test_classic_prompt(): |
|
561 | 561 | transform_checker(syntax['classic_prompt'], isp.transform_classic_prompt) |
|
562 | 562 | for example in syntax_ml['classic_prompt']: |
|
563 | 563 | transform_checker(example, isp.transform_classic_prompt) |
|
564 | 564 | |
|
565 | 565 | |
|
566 | 566 | def test_ipy_prompt(): |
|
567 | 567 | transform_checker(syntax['ipy_prompt'], isp.transform_ipy_prompt) |
|
568 | 568 | for example in syntax_ml['ipy_prompt']: |
|
569 | 569 | transform_checker(example, isp.transform_ipy_prompt) |
|
570 | 570 | |
|
571 | 571 | def test_end_help(): |
|
572 | 572 | tt.check_pairs(isp.transform_help_end, syntax['end_help']) |
|
573 | 573 | |
|
574 | 574 | def test_escaped_noesc(): |
|
575 | 575 | tt.check_pairs(isp.transform_escaped, syntax['escaped_noesc']) |
|
576 | 576 | |
|
577 | 577 | |
|
578 | 578 | def test_escaped_shell(): |
|
579 | 579 | tt.check_pairs(isp.transform_escaped, syntax['escaped_shell']) |
|
580 | 580 | |
|
581 | 581 | |
|
582 | 582 | def test_escaped_help(): |
|
583 | 583 | tt.check_pairs(isp.transform_escaped, syntax['escaped_help']) |
|
584 | 584 | |
|
585 | 585 | |
|
586 | 586 | def test_escaped_magic(): |
|
587 | 587 | tt.check_pairs(isp.transform_escaped, syntax['escaped_magic']) |
|
588 | 588 | |
|
589 | 589 | |
|
590 | 590 | def test_escaped_quote(): |
|
591 | 591 | tt.check_pairs(isp.transform_escaped, syntax['escaped_quote']) |
|
592 | 592 | |
|
593 | 593 | |
|
594 | 594 | def test_escaped_quote2(): |
|
595 | 595 | tt.check_pairs(isp.transform_escaped, syntax['escaped_quote2']) |
|
596 | 596 | |
|
597 | 597 | |
|
598 | 598 | def test_escaped_paren(): |
|
599 | 599 | tt.check_pairs(isp.transform_escaped, syntax['escaped_paren']) |
|
600 | 600 | |
|
601 | 601 | |
|
602 | def test_last_blank(): | |
|
603 | nt.assert_false(isp.last_blank('')) | |
|
604 | nt.assert_false(isp.last_blank('abc')) | |
|
605 | nt.assert_false(isp.last_blank('abc\n')) | |
|
606 | nt.assert_false(isp.last_blank('abc\na')) | |
|
607 | nt.assert_true(isp.last_blank('\n')) | |
|
608 | nt.assert_true(isp.last_blank('\n ')) | |
|
609 | nt.assert_true(isp.last_blank('abc\n ')) | |
|
610 | nt.assert_true(isp.last_blank('abc\n\n')) | |
|
611 | ||
|
612 | ||
|
613 | def test_cell_magics(): | |
|
614 | from IPython.core import magic | |
|
615 | ||
|
616 | cell = """\ | |
|
617 | %%cellm line | |
|
618 | body | |
|
619 | """ | |
|
620 | sp = isp.IPythonInputSplitter(input_mode='line') | |
|
621 | sp.push(cell) | |
|
622 | nt.assert_equal(sp.cell_magic_parts, ['body\n']) | |
|
623 | out = sp.source | |
|
624 | ref = u"get_ipython()._cell_magic(u'cellm', u'line')\n" | |
|
625 | nt.assert_equal(out, ref) | |
|
626 | ||
|
627 | sp.reset() | |
|
628 | ||
|
629 | sp.push('%%cellm line2\n') | |
|
630 | nt.assert_true(sp.push_accepts_more()) #1 | |
|
631 | sp.push('\n') | |
|
632 | nt.assert_true(sp.push_accepts_more()) #2 | |
|
633 | sp.push('\n') | |
|
634 | nt.assert_false(sp.push_accepts_more()) #3 | |
|
635 | ||
|
636 | ||
|
602 | 637 | class IPythonInputTestCase(InputSplitterTestCase): |
|
603 | 638 | """By just creating a new class whose .isp is a different instance, we |
|
604 | 639 | re-run the same test battery on the new input splitter. |
|
605 | 640 | |
|
606 | 641 | In addition, this runs the tests over the syntax and syntax_ml dicts that |
|
607 | 642 | were tested by individual functions, as part of the OO interface. |
|
608 | 643 | |
|
609 | 644 | It also makes some checks on the raw buffer storage. |
|
610 | 645 | """ |
|
611 | 646 | |
|
612 | 647 | def setUp(self): |
|
613 | 648 | self.isp = isp.IPythonInputSplitter(input_mode='line') |
|
614 | 649 | |
|
615 | 650 | def test_syntax(self): |
|
616 | 651 | """Call all single-line syntax tests from the main object""" |
|
617 | 652 | isp = self.isp |
|
618 | 653 | for example in syntax.itervalues(): |
|
619 | 654 | for raw, out_t in example: |
|
620 | 655 | if raw.startswith(' '): |
|
621 | 656 | continue |
|
622 | 657 | |
|
623 | 658 | isp.push(raw) |
|
624 | 659 | out, out_raw = isp.source_raw_reset() |
|
625 | 660 | self.assertEqual(out.rstrip(), out_t, |
|
626 | 661 | tt.pair_fail_msg.format("inputsplitter",raw, out_t, out)) |
|
627 | 662 | self.assertEqual(out_raw.rstrip(), raw.rstrip()) |
|
628 | 663 | |
|
629 | 664 | def test_syntax_multiline(self): |
|
630 | 665 | isp = self.isp |
|
631 | 666 | for example in syntax_ml.itervalues(): |
|
632 | 667 | out_t_parts = [] |
|
633 | 668 | raw_parts = [] |
|
634 | 669 | for line_pairs in example: |
|
635 | 670 | for lraw, out_t_part in line_pairs: |
|
636 | 671 | isp.push(lraw) |
|
637 | 672 | out_t_parts.append(out_t_part) |
|
638 | 673 | raw_parts.append(lraw) |
|
639 | 674 | |
|
640 | 675 | out, out_raw = isp.source_raw_reset() |
|
641 | 676 | out_t = '\n'.join(out_t_parts).rstrip() |
|
642 | 677 | raw = '\n'.join(raw_parts).rstrip() |
|
643 | 678 | self.assertEqual(out.rstrip(), out_t) |
|
644 | 679 | self.assertEqual(out_raw.rstrip(), raw) |
|
645 | 680 | |
|
646 | 681 | |
|
647 | 682 | class BlockIPythonInputTestCase(IPythonInputTestCase): |
|
648 | 683 | |
|
649 | 684 | # Deactivate tests that don't make sense for the block mode |
|
650 | 685 | test_push3 = test_split = lambda s: None |
|
651 | 686 | |
|
652 | 687 | def setUp(self): |
|
653 | 688 | self.isp = isp.IPythonInputSplitter(input_mode='cell') |
|
654 | 689 | |
|
655 | 690 | def test_syntax_multiline(self): |
|
656 | 691 | isp = self.isp |
|
657 | 692 | for example in syntax_ml.itervalues(): |
|
658 | 693 | raw_parts = [] |
|
659 | 694 | out_t_parts = [] |
|
660 | 695 | for line_pairs in example: |
|
661 | 696 | for raw, out_t_part in line_pairs: |
|
662 | 697 | raw_parts.append(raw) |
|
663 | 698 | out_t_parts.append(out_t_part) |
|
664 | 699 | |
|
665 | 700 | raw = '\n'.join(raw_parts) |
|
666 | 701 | out_t = '\n'.join(out_t_parts) |
|
667 | 702 | |
|
668 | 703 | isp.push(raw) |
|
669 | 704 | out, out_raw = isp.source_raw_reset() |
|
670 | 705 | # Match ignoring trailing whitespace |
|
671 | 706 | self.assertEqual(out.rstrip(), out_t.rstrip()) |
|
672 | 707 | self.assertEqual(out_raw.rstrip(), raw.rstrip()) |
|
673 | 708 | |
|
674 | 709 | |
|
675 | 710 | #----------------------------------------------------------------------------- |
|
676 | 711 | # Main - use as a script, mostly for developer experiments |
|
677 | 712 | #----------------------------------------------------------------------------- |
|
678 | 713 | |
|
679 | 714 | if __name__ == '__main__': |
|
680 | 715 | # A simple demo for interactive experimentation. This code will not get |
|
681 | 716 | # picked up by any test suite. |
|
682 | 717 | from IPython.core.inputsplitter import InputSplitter, IPythonInputSplitter |
|
683 | 718 | |
|
684 | 719 | # configure here the syntax to use, prompt and whether to autoindent |
|
685 | 720 | #isp, start_prompt = InputSplitter(), '>>> ' |
|
686 | 721 | isp, start_prompt = IPythonInputSplitter(), 'In> ' |
|
687 | 722 | |
|
688 | 723 | autoindent = True |
|
689 | 724 | #autoindent = False |
|
690 | 725 | |
|
691 | 726 | try: |
|
692 | 727 | while True: |
|
693 | 728 | prompt = start_prompt |
|
694 | 729 | while isp.push_accepts_more(): |
|
695 | 730 | indent = ' '*isp.indent_spaces |
|
696 | 731 | if autoindent: |
|
697 | 732 | line = indent + raw_input(prompt+indent) |
|
698 | 733 | else: |
|
699 | 734 | line = raw_input(prompt) |
|
700 | 735 | isp.push(line) |
|
701 | 736 | prompt = '... ' |
|
702 | 737 | |
|
703 | 738 | # Here we just return input so we can use it in a test suite, but a |
|
704 | 739 | # real interpreter would instead send it for execution somewhere. |
|
705 | 740 | #src = isp.source; raise EOFError # dbg |
|
706 | 741 | src, raw = isp.source_raw_reset() |
|
707 | 742 | print 'Input source was:\n', src |
|
708 | 743 | print 'Raw source was:\n', raw |
|
709 | 744 | except EOFError: |
|
710 | 745 | print 'Bye' |
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