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@@ -1,275 +1,282 b'' | |||
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1 | 1 | # -*- coding: utf-8 -*- |
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2 | 2 | """Displayhook for IPython. |
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3 | 3 | |
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4 | 4 | This defines a callable class that IPython uses for `sys.displayhook`. |
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5 | 5 | """ |
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6 | 6 | |
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7 | 7 | # Copyright (c) IPython Development Team. |
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8 | 8 | # Distributed under the terms of the Modified BSD License. |
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9 | 9 | |
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10 | 10 | from __future__ import print_function |
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11 | 11 | |
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12 | 12 | import sys |
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13 | 13 | |
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14 | 14 | from IPython.core.formatters import _safe_get_formatter_method |
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15 | 15 | from IPython.config.configurable import Configurable |
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16 | 16 | from IPython.utils import io |
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17 | 17 | from IPython.utils.py3compat import builtin_mod |
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18 | 18 | from IPython.utils.traitlets import Instance, Float |
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19 | 19 | from IPython.utils.warn import warn |
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20 | 20 | |
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21 | 21 | # TODO: Move the various attributes (cache_size, [others now moved]). Some |
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22 | 22 | # of these are also attributes of InteractiveShell. They should be on ONE object |
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23 | 23 | # only and the other objects should ask that one object for their values. |
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24 | 24 | |
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25 | 25 | class DisplayHook(Configurable): |
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26 | 26 | """The custom IPython displayhook to replace sys.displayhook. |
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27 | 27 | |
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28 | 28 | This class does many things, but the basic idea is that it is a callable |
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29 | 29 | that gets called anytime user code returns a value. |
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30 | 30 | """ |
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31 | 31 | |
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32 | 32 | shell = Instance('IPython.core.interactiveshell.InteractiveShellABC') |
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33 | exec_result = Instance('IPython.core.interactiveshell.ExecutionResult', | |
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34 | allow_none=True) | |
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33 | 35 | cull_fraction = Float(0.2) |
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34 | 36 | |
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35 | 37 | def __init__(self, shell=None, cache_size=1000, **kwargs): |
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36 | 38 | super(DisplayHook, self).__init__(shell=shell, **kwargs) |
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37 | 39 | cache_size_min = 3 |
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38 | 40 | if cache_size <= 0: |
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39 | 41 | self.do_full_cache = 0 |
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40 | 42 | cache_size = 0 |
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41 | 43 | elif cache_size < cache_size_min: |
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42 | 44 | self.do_full_cache = 0 |
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43 | 45 | cache_size = 0 |
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44 | 46 | warn('caching was disabled (min value for cache size is %s).' % |
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45 | 47 | cache_size_min,level=3) |
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46 | 48 | else: |
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47 | 49 | self.do_full_cache = 1 |
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48 | 50 | |
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49 | 51 | self.cache_size = cache_size |
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50 | 52 | |
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51 | 53 | # we need a reference to the user-level namespace |
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52 | 54 | self.shell = shell |
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53 | 55 | |
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54 | 56 | self._,self.__,self.___ = '','','' |
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55 | 57 | |
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56 | 58 | # these are deliberately global: |
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57 | 59 | to_user_ns = {'_':self._,'__':self.__,'___':self.___} |
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58 | 60 | self.shell.user_ns.update(to_user_ns) |
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59 | 61 | |
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60 | 62 | @property |
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61 | 63 | def prompt_count(self): |
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62 | 64 | return self.shell.execution_count |
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63 | 65 | |
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64 | 66 | #------------------------------------------------------------------------- |
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65 | 67 | # Methods used in __call__. Override these methods to modify the behavior |
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66 | 68 | # of the displayhook. |
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67 | 69 | #------------------------------------------------------------------------- |
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68 | 70 | |
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69 | 71 | def check_for_underscore(self): |
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70 | 72 | """Check if the user has set the '_' variable by hand.""" |
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71 | 73 | # If something injected a '_' variable in __builtin__, delete |
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72 | 74 | # ipython's automatic one so we don't clobber that. gettext() in |
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73 | 75 | # particular uses _, so we need to stay away from it. |
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74 | 76 | if '_' in builtin_mod.__dict__: |
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75 | 77 | try: |
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76 | 78 | del self.shell.user_ns['_'] |
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77 | 79 | except KeyError: |
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78 | 80 | pass |
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79 | 81 | |
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80 | 82 | def quiet(self): |
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81 | 83 | """Should we silence the display hook because of ';'?""" |
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82 | 84 | # do not print output if input ends in ';' |
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83 | 85 | try: |
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84 | 86 | cell = self.shell.history_manager.input_hist_parsed[self.prompt_count] |
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85 | 87 | return cell.rstrip().endswith(';') |
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86 | 88 | except IndexError: |
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87 | 89 | # some uses of ipshellembed may fail here |
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88 | 90 | return False |
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89 | 91 | |
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90 | 92 | def start_displayhook(self): |
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91 | 93 | """Start the displayhook, initializing resources.""" |
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92 | 94 | pass |
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93 | 95 | |
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94 | 96 | def write_output_prompt(self): |
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95 | 97 | """Write the output prompt. |
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96 | 98 | |
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97 | 99 | The default implementation simply writes the prompt to |
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98 | 100 | ``io.stdout``. |
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99 | 101 | """ |
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100 | 102 | # Use write, not print which adds an extra space. |
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101 | 103 | io.stdout.write(self.shell.separate_out) |
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102 | 104 | outprompt = self.shell.prompt_manager.render('out') |
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103 | 105 | if self.do_full_cache: |
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104 | 106 | io.stdout.write(outprompt) |
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105 | 107 | |
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106 | 108 | def compute_format_data(self, result): |
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107 | 109 | """Compute format data of the object to be displayed. |
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108 | 110 | |
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109 | 111 | The format data is a generalization of the :func:`repr` of an object. |
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110 | 112 | In the default implementation the format data is a :class:`dict` of |
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111 | 113 | key value pair where the keys are valid MIME types and the values |
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112 | 114 | are JSON'able data structure containing the raw data for that MIME |
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113 | 115 | type. It is up to frontends to determine pick a MIME to to use and |
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114 | 116 | display that data in an appropriate manner. |
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115 | 117 | |
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116 | 118 | This method only computes the format data for the object and should |
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117 | 119 | NOT actually print or write that to a stream. |
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118 | 120 | |
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119 | 121 | Parameters |
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120 | 122 | ---------- |
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121 | 123 | result : object |
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122 | 124 | The Python object passed to the display hook, whose format will be |
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123 | 125 | computed. |
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124 | 126 | |
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125 | 127 | Returns |
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126 | 128 | ------- |
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127 | 129 | (format_dict, md_dict) : dict |
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128 | 130 | format_dict is a :class:`dict` whose keys are valid MIME types and values are |
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129 | 131 | JSON'able raw data for that MIME type. It is recommended that |
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130 | 132 | all return values of this should always include the "text/plain" |
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131 | 133 | MIME type representation of the object. |
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132 | 134 | md_dict is a :class:`dict` with the same MIME type keys |
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133 | 135 | of metadata associated with each output. |
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134 | 136 | |
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135 | 137 | """ |
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136 | 138 | return self.shell.display_formatter.format(result) |
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137 | 139 | |
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138 | 140 | def write_format_data(self, format_dict, md_dict=None): |
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139 | 141 | """Write the format data dict to the frontend. |
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140 | 142 | |
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141 | 143 | This default version of this method simply writes the plain text |
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142 | 144 | representation of the object to ``io.stdout``. Subclasses should |
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143 | 145 | override this method to send the entire `format_dict` to the |
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144 | 146 | frontends. |
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145 | 147 | |
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146 | 148 | Parameters |
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147 | 149 | ---------- |
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148 | 150 | format_dict : dict |
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149 | 151 | The format dict for the object passed to `sys.displayhook`. |
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150 | 152 | md_dict : dict (optional) |
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151 | 153 | The metadata dict to be associated with the display data. |
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152 | 154 | """ |
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153 | 155 | if 'text/plain' not in format_dict: |
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154 | 156 | # nothing to do |
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155 | 157 | return |
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156 | 158 | # We want to print because we want to always make sure we have a |
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157 | 159 | # newline, even if all the prompt separators are ''. This is the |
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158 | 160 | # standard IPython behavior. |
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159 | 161 | result_repr = format_dict['text/plain'] |
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160 | 162 | if '\n' in result_repr: |
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161 | 163 | # So that multi-line strings line up with the left column of |
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162 | 164 | # the screen, instead of having the output prompt mess up |
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163 | 165 | # their first line. |
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164 | 166 | # We use the prompt template instead of the expanded prompt |
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165 | 167 | # because the expansion may add ANSI escapes that will interfere |
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166 | 168 | # with our ability to determine whether or not we should add |
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167 | 169 | # a newline. |
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168 | 170 | prompt_template = self.shell.prompt_manager.out_template |
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169 | 171 | if prompt_template and not prompt_template.endswith('\n'): |
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170 | 172 | # But avoid extraneous empty lines. |
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171 | 173 | result_repr = '\n' + result_repr |
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172 | 174 | |
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173 | 175 | print(result_repr, file=io.stdout) |
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174 | 176 | |
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175 | 177 | def update_user_ns(self, result): |
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176 | 178 | """Update user_ns with various things like _, __, _1, etc.""" |
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177 | 179 | |
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178 | 180 | # Avoid recursive reference when displaying _oh/Out |
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179 | 181 | if result is not self.shell.user_ns['_oh']: |
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180 | 182 | if len(self.shell.user_ns['_oh']) >= self.cache_size and self.do_full_cache: |
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181 | 183 | self.cull_cache() |
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182 | 184 | # Don't overwrite '_' and friends if '_' is in __builtin__ (otherwise |
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183 | 185 | # we cause buggy behavior for things like gettext). |
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184 | 186 | |
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185 | 187 | if '_' not in builtin_mod.__dict__: |
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186 | 188 | self.___ = self.__ |
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187 | 189 | self.__ = self._ |
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188 | 190 | self._ = result |
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189 | 191 | self.shell.push({'_':self._, |
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190 | 192 | '__':self.__, |
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191 | 193 | '___':self.___}, interactive=False) |
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192 | 194 | |
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193 | 195 | # hackish access to top-level namespace to create _1,_2... dynamically |
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194 | 196 | to_main = {} |
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195 | 197 | if self.do_full_cache: |
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196 | 198 | new_result = '_'+repr(self.prompt_count) |
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197 | 199 | to_main[new_result] = result |
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198 | 200 | self.shell.push(to_main, interactive=False) |
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199 | 201 | self.shell.user_ns['_oh'][self.prompt_count] = result |
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200 | 202 | |
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203 | def fill_exec_result(self, result): | |
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204 | if self.exec_result is not None: | |
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205 | self.exec_result.result = result | |
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206 | ||
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201 | 207 | def log_output(self, format_dict): |
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202 | 208 | """Log the output.""" |
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203 | 209 | if 'text/plain' not in format_dict: |
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204 | 210 | # nothing to do |
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205 | 211 | return |
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206 | 212 | if self.shell.logger.log_output: |
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207 | 213 | self.shell.logger.log_write(format_dict['text/plain'], 'output') |
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208 | 214 | self.shell.history_manager.output_hist_reprs[self.prompt_count] = \ |
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209 | 215 | format_dict['text/plain'] |
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210 | 216 | |
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211 | 217 | def finish_displayhook(self): |
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212 | 218 | """Finish up all displayhook activities.""" |
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213 | 219 | io.stdout.write(self.shell.separate_out2) |
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214 | 220 | io.stdout.flush() |
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215 | 221 | |
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216 | 222 | def __call__(self, result=None): |
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217 | 223 | """Printing with history cache management. |
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218 | 224 | |
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219 | 225 | This is invoked everytime the interpreter needs to print, and is |
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220 | 226 | activated by setting the variable sys.displayhook to it. |
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221 | 227 | """ |
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222 | 228 | self.check_for_underscore() |
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223 | 229 | if result is not None and not self.quiet(): |
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224 | 230 | self.start_displayhook() |
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225 | 231 | self.write_output_prompt() |
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226 | 232 | format_dict, md_dict = self.compute_format_data(result) |
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227 | 233 | self.update_user_ns(result) |
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234 | self.fill_exec_result(result) | |
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228 | 235 | if format_dict: |
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229 | 236 | self.write_format_data(format_dict, md_dict) |
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230 | 237 | self.log_output(format_dict) |
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231 | 238 | self.finish_displayhook() |
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232 | 239 | |
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233 | 240 | def cull_cache(self): |
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234 | 241 | """Output cache is full, cull the oldest entries""" |
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235 | 242 | oh = self.shell.user_ns.get('_oh', {}) |
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236 | 243 | sz = len(oh) |
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237 | 244 | cull_count = max(int(sz * self.cull_fraction), 2) |
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238 | 245 | warn('Output cache limit (currently {sz} entries) hit.\n' |
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239 | 246 | 'Flushing oldest {cull_count} entries.'.format(sz=sz, cull_count=cull_count)) |
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240 | 247 | |
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241 | 248 | for i, n in enumerate(sorted(oh)): |
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242 | 249 | if i >= cull_count: |
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243 | 250 | break |
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244 | 251 | self.shell.user_ns.pop('_%i' % n, None) |
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245 | 252 | oh.pop(n, None) |
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246 | 253 | |
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247 | 254 | |
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248 | 255 | def flush(self): |
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249 | 256 | if not self.do_full_cache: |
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250 | 257 | raise ValueError("You shouldn't have reached the cache flush " |
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251 | 258 | "if full caching is not enabled!") |
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252 | 259 | # delete auto-generated vars from global namespace |
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253 | 260 | |
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254 | 261 | for n in range(1,self.prompt_count + 1): |
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255 | 262 | key = '_'+repr(n) |
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256 | 263 | try: |
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257 | 264 | del self.shell.user_ns[key] |
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258 | 265 | except: pass |
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259 | 266 | # In some embedded circumstances, the user_ns doesn't have the |
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260 | 267 | # '_oh' key set up. |
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261 | 268 | oh = self.shell.user_ns.get('_oh', None) |
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262 | 269 | if oh is not None: |
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263 | 270 | oh.clear() |
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264 | 271 | |
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265 | 272 | # Release our own references to objects: |
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266 | 273 | self._, self.__, self.___ = '', '', '' |
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267 | 274 | |
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268 | 275 | if '_' not in builtin_mod.__dict__: |
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269 | 276 | self.shell.user_ns.update({'_':None,'__':None, '___':None}) |
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270 | 277 | import gc |
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271 | 278 | # TODO: Is this really needed? |
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272 | 279 | # IronPython blocks here forever |
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273 | 280 | if sys.platform != "cli": |
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274 | 281 | gc.collect() |
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275 | 282 |
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The requested commit or file is too big and content was truncated. Show full diff |
@@ -1,887 +1,906 b'' | |||
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1 | 1 | # -*- coding: utf-8 -*- |
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2 | 2 | """Tests for the key interactiveshell module. |
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3 | 3 | |
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4 | 4 | Historically the main classes in interactiveshell have been under-tested. This |
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5 | 5 | module should grow as many single-method tests as possible to trap many of the |
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6 | 6 | recurring bugs we seem to encounter with high-level interaction. |
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7 | 7 | """ |
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8 | 8 | |
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9 | 9 | # Copyright (c) IPython Development Team. |
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10 | 10 | # Distributed under the terms of the Modified BSD License. |
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11 | 11 | |
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12 | 12 | import ast |
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13 | 13 | import os |
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14 | 14 | import signal |
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15 | 15 | import shutil |
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16 | 16 | import sys |
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17 | 17 | import tempfile |
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18 | 18 | import unittest |
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19 | 19 | try: |
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20 | 20 | from unittest import mock |
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21 | 21 | except ImportError: |
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22 | 22 | import mock |
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23 | 23 | from os.path import join |
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24 | 24 | |
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25 | 25 | import nose.tools as nt |
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26 | 26 | |
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27 | 27 | from IPython.core.error import InputRejected |
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28 | 28 | from IPython.core.inputtransformer import InputTransformer |
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29 | 29 | from IPython.testing.decorators import ( |
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30 | 30 | skipif, skip_win32, onlyif_unicode_paths, onlyif_cmds_exist, |
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31 | 31 | ) |
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32 | 32 | from IPython.testing import tools as tt |
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33 | 33 | from IPython.utils import io |
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34 | 34 | from IPython.utils.process import find_cmd |
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35 | 35 | from IPython.utils import py3compat |
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36 | 36 | from IPython.utils.py3compat import unicode_type, PY3 |
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37 | 37 | |
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38 | 38 | if PY3: |
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39 | 39 | from io import StringIO |
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40 | 40 | else: |
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41 | 41 | from StringIO import StringIO |
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42 | 42 | |
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43 | 43 | #----------------------------------------------------------------------------- |
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44 | 44 | # Globals |
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45 | 45 | #----------------------------------------------------------------------------- |
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46 | 46 | # This is used by every single test, no point repeating it ad nauseam |
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47 | 47 | ip = get_ipython() |
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48 | 48 | |
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49 | 49 | #----------------------------------------------------------------------------- |
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50 | 50 | # Tests |
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51 | 51 | #----------------------------------------------------------------------------- |
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52 | 52 | |
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53 | 53 | class InteractiveShellTestCase(unittest.TestCase): |
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54 | 54 | def test_naked_string_cells(self): |
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55 | 55 | """Test that cells with only naked strings are fully executed""" |
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56 | 56 | # First, single-line inputs |
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57 | 57 | ip.run_cell('"a"\n') |
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58 | 58 | self.assertEqual(ip.user_ns['_'], 'a') |
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59 | 59 | # And also multi-line cells |
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60 | 60 | ip.run_cell('"""a\nb"""\n') |
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61 | 61 | self.assertEqual(ip.user_ns['_'], 'a\nb') |
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62 | 62 | |
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63 | 63 | def test_run_empty_cell(self): |
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64 | 64 | """Just make sure we don't get a horrible error with a blank |
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65 | 65 | cell of input. Yes, I did overlook that.""" |
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66 | 66 | old_xc = ip.execution_count |
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67 | ip.run_cell('') | |
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67 | res = ip.run_cell('') | |
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68 | 68 | self.assertEqual(ip.execution_count, old_xc) |
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69 | self.assertEqual(res.execution_count, None) | |
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69 | 70 | |
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70 | 71 | def test_run_cell_multiline(self): |
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71 | 72 | """Multi-block, multi-line cells must execute correctly. |
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72 | 73 | """ |
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74 | print(ip.history_manager.input_hist_raw) | |
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75 | print(ip.history_manager.output_hist) | |
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73 | 76 | src = '\n'.join(["x=1", |
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74 | 77 | "y=2", |
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75 | 78 | "if 1:", |
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76 | 79 | " x += 1", |
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77 | 80 | " y += 1",]) |
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78 | ip.run_cell(src) | |
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81 | res = ip.run_cell(src) | |
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79 | 82 | self.assertEqual(ip.user_ns['x'], 2) |
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80 | 83 | self.assertEqual(ip.user_ns['y'], 3) |
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84 | self.assertEqual(res.success, True) | |
|
85 | print(ip.history_manager.input_hist_raw) | |
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86 | print(ip.history_manager.output_hist) | |
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87 | self.assertEqual(res.result, None) | |
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81 | 88 | |
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82 | 89 | def test_multiline_string_cells(self): |
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83 | 90 | "Code sprinkled with multiline strings should execute (GH-306)" |
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84 | 91 | ip.run_cell('tmp=0') |
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85 | 92 | self.assertEqual(ip.user_ns['tmp'], 0) |
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86 | ip.run_cell('tmp=1;"""a\nb"""\n') | |
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93 | res = ip.run_cell('tmp=1;"""a\nb"""\n') | |
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87 | 94 | self.assertEqual(ip.user_ns['tmp'], 1) |
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95 | self.assertEqual(res.success, True) | |
|
96 | self.assertEqual(res.result, "a\nb") | |
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88 | 97 | |
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89 | 98 | def test_dont_cache_with_semicolon(self): |
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90 | 99 | "Ending a line with semicolon should not cache the returned object (GH-307)" |
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91 | 100 | oldlen = len(ip.user_ns['Out']) |
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92 | 101 | for cell in ['1;', '1;1;']: |
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93 | ip.run_cell(cell, store_history=True) | |
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102 | res = ip.run_cell(cell, store_history=True) | |
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94 | 103 | newlen = len(ip.user_ns['Out']) |
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95 | 104 | self.assertEqual(oldlen, newlen) |
|
105 | self.assertIsNone(res.result) | |
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96 | 106 | i = 0 |
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97 | 107 | #also test the default caching behavior |
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98 | 108 | for cell in ['1', '1;1']: |
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99 | 109 | ip.run_cell(cell, store_history=True) |
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100 | 110 | newlen = len(ip.user_ns['Out']) |
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101 | 111 | i += 1 |
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102 | 112 | self.assertEqual(oldlen+i, newlen) |
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103 | 113 | |
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114 | def test_syntax_error(self): | |
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115 | res = ip.run_cell("raise = 3") | |
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116 | self.assertIsInstance(res.error_before_exec, SyntaxError) | |
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117 | ||
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104 | 118 | def test_In_variable(self): |
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105 | 119 | "Verify that In variable grows with user input (GH-284)" |
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106 | 120 | oldlen = len(ip.user_ns['In']) |
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107 | 121 | ip.run_cell('1;', store_history=True) |
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108 | 122 | newlen = len(ip.user_ns['In']) |
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109 | 123 | self.assertEqual(oldlen+1, newlen) |
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110 | 124 | self.assertEqual(ip.user_ns['In'][-1],'1;') |
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111 | 125 | |
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112 | 126 | def test_magic_names_in_string(self): |
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113 | 127 | ip.run_cell('a = """\n%exit\n"""') |
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114 | 128 | self.assertEqual(ip.user_ns['a'], '\n%exit\n') |
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115 | 129 | |
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116 | 130 | def test_trailing_newline(self): |
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117 | 131 | """test that running !(command) does not raise a SyntaxError""" |
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118 | 132 | ip.run_cell('!(true)\n', False) |
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119 | 133 | ip.run_cell('!(true)\n\n\n', False) |
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120 | 134 | |
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121 | 135 | def test_gh_597(self): |
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122 | 136 | """Pretty-printing lists of objects with non-ascii reprs may cause |
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123 | 137 | problems.""" |
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124 | 138 | class Spam(object): |
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125 | 139 | def __repr__(self): |
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126 | 140 | return "\xe9"*50 |
|
127 | 141 | import IPython.core.formatters |
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128 | 142 | f = IPython.core.formatters.PlainTextFormatter() |
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129 | 143 | f([Spam(),Spam()]) |
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130 | 144 | |
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131 | 145 | |
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132 | 146 | def test_future_flags(self): |
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133 | 147 | """Check that future flags are used for parsing code (gh-777)""" |
|
134 | 148 | ip.run_cell('from __future__ import print_function') |
|
135 | 149 | try: |
|
136 | 150 | ip.run_cell('prfunc_return_val = print(1,2, sep=" ")') |
|
137 | 151 | assert 'prfunc_return_val' in ip.user_ns |
|
138 | 152 | finally: |
|
139 | 153 | # Reset compiler flags so we don't mess up other tests. |
|
140 | 154 | ip.compile.reset_compiler_flags() |
|
141 | 155 | |
|
142 | 156 | def test_future_unicode(self): |
|
143 | 157 | """Check that unicode_literals is imported from __future__ (gh #786)""" |
|
144 | 158 | try: |
|
145 | 159 | ip.run_cell(u'byte_str = "a"') |
|
146 | 160 | assert isinstance(ip.user_ns['byte_str'], str) # string literals are byte strings by default |
|
147 | 161 | ip.run_cell('from __future__ import unicode_literals') |
|
148 | 162 | ip.run_cell(u'unicode_str = "a"') |
|
149 | 163 | assert isinstance(ip.user_ns['unicode_str'], unicode_type) # strings literals are now unicode |
|
150 | 164 | finally: |
|
151 | 165 | # Reset compiler flags so we don't mess up other tests. |
|
152 | 166 | ip.compile.reset_compiler_flags() |
|
153 | 167 | |
|
154 | 168 | def test_can_pickle(self): |
|
155 | 169 | "Can we pickle objects defined interactively (GH-29)" |
|
156 | 170 | ip = get_ipython() |
|
157 | 171 | ip.reset() |
|
158 | 172 | ip.run_cell(("class Mylist(list):\n" |
|
159 | 173 | " def __init__(self,x=[]):\n" |
|
160 | 174 | " list.__init__(self,x)")) |
|
161 | 175 | ip.run_cell("w=Mylist([1,2,3])") |
|
162 | 176 | |
|
163 | 177 | from pickle import dumps |
|
164 | 178 | |
|
165 | 179 | # We need to swap in our main module - this is only necessary |
|
166 | 180 | # inside the test framework, because IPython puts the interactive module |
|
167 | 181 | # in place (but the test framework undoes this). |
|
168 | 182 | _main = sys.modules['__main__'] |
|
169 | 183 | sys.modules['__main__'] = ip.user_module |
|
170 | 184 | try: |
|
171 | 185 | res = dumps(ip.user_ns["w"]) |
|
172 | 186 | finally: |
|
173 | 187 | sys.modules['__main__'] = _main |
|
174 | 188 | self.assertTrue(isinstance(res, bytes)) |
|
175 | 189 | |
|
176 | 190 | def test_global_ns(self): |
|
177 | 191 | "Code in functions must be able to access variables outside them." |
|
178 | 192 | ip = get_ipython() |
|
179 | 193 | ip.run_cell("a = 10") |
|
180 | 194 | ip.run_cell(("def f(x):\n" |
|
181 | 195 | " return x + a")) |
|
182 | 196 | ip.run_cell("b = f(12)") |
|
183 | 197 | self.assertEqual(ip.user_ns["b"], 22) |
|
184 | 198 | |
|
185 | 199 | def test_bad_custom_tb(self): |
|
186 | 200 | """Check that InteractiveShell is protected from bad custom exception handlers""" |
|
187 | 201 | from IPython.utils import io |
|
188 | 202 | save_stderr = io.stderr |
|
189 | 203 | try: |
|
190 | 204 | # capture stderr |
|
191 | 205 | io.stderr = StringIO() |
|
192 | 206 | ip.set_custom_exc((IOError,), lambda etype,value,tb: 1/0) |
|
193 | 207 | self.assertEqual(ip.custom_exceptions, (IOError,)) |
|
194 | 208 | ip.run_cell(u'raise IOError("foo")') |
|
195 | 209 | self.assertEqual(ip.custom_exceptions, ()) |
|
196 | 210 | self.assertTrue("Custom TB Handler failed" in io.stderr.getvalue()) |
|
197 | 211 | finally: |
|
198 | 212 | io.stderr = save_stderr |
|
199 | 213 | |
|
200 | 214 | def test_bad_custom_tb_return(self): |
|
201 | 215 | """Check that InteractiveShell is protected from bad return types in custom exception handlers""" |
|
202 | 216 | from IPython.utils import io |
|
203 | 217 | save_stderr = io.stderr |
|
204 | 218 | try: |
|
205 | 219 | # capture stderr |
|
206 | 220 | io.stderr = StringIO() |
|
207 | 221 | ip.set_custom_exc((NameError,),lambda etype,value,tb, tb_offset=None: 1) |
|
208 | 222 | self.assertEqual(ip.custom_exceptions, (NameError,)) |
|
209 | 223 | ip.run_cell(u'a=abracadabra') |
|
210 | 224 | self.assertEqual(ip.custom_exceptions, ()) |
|
211 | 225 | self.assertTrue("Custom TB Handler failed" in io.stderr.getvalue()) |
|
212 | 226 | finally: |
|
213 | 227 | io.stderr = save_stderr |
|
214 | 228 | |
|
215 | 229 | def test_drop_by_id(self): |
|
216 | 230 | myvars = {"a":object(), "b":object(), "c": object()} |
|
217 | 231 | ip.push(myvars, interactive=False) |
|
218 | 232 | for name in myvars: |
|
219 | 233 | assert name in ip.user_ns, name |
|
220 | 234 | assert name in ip.user_ns_hidden, name |
|
221 | 235 | ip.user_ns['b'] = 12 |
|
222 | 236 | ip.drop_by_id(myvars) |
|
223 | 237 | for name in ["a", "c"]: |
|
224 | 238 | assert name not in ip.user_ns, name |
|
225 | 239 | assert name not in ip.user_ns_hidden, name |
|
226 | 240 | assert ip.user_ns['b'] == 12 |
|
227 | 241 | ip.reset() |
|
228 | 242 | |
|
229 | 243 | def test_var_expand(self): |
|
230 | 244 | ip.user_ns['f'] = u'Ca\xf1o' |
|
231 | 245 | self.assertEqual(ip.var_expand(u'echo $f'), u'echo Ca\xf1o') |
|
232 | 246 | self.assertEqual(ip.var_expand(u'echo {f}'), u'echo Ca\xf1o') |
|
233 | 247 | self.assertEqual(ip.var_expand(u'echo {f[:-1]}'), u'echo Ca\xf1') |
|
234 | 248 | self.assertEqual(ip.var_expand(u'echo {1*2}'), u'echo 2') |
|
235 | 249 | |
|
236 | 250 | ip.user_ns['f'] = b'Ca\xc3\xb1o' |
|
237 | 251 | # This should not raise any exception: |
|
238 | 252 | ip.var_expand(u'echo $f') |
|
239 | 253 | |
|
240 | 254 | def test_var_expand_local(self): |
|
241 | 255 | """Test local variable expansion in !system and %magic calls""" |
|
242 | 256 | # !system |
|
243 | 257 | ip.run_cell('def test():\n' |
|
244 | 258 | ' lvar = "ttt"\n' |
|
245 | 259 | ' ret = !echo {lvar}\n' |
|
246 | 260 | ' return ret[0]\n') |
|
247 | 261 | res = ip.user_ns['test']() |
|
248 | 262 | nt.assert_in('ttt', res) |
|
249 | 263 | |
|
250 | 264 | # %magic |
|
251 | 265 | ip.run_cell('def makemacro():\n' |
|
252 | 266 | ' macroname = "macro_var_expand_locals"\n' |
|
253 | 267 | ' %macro {macroname} codestr\n') |
|
254 | 268 | ip.user_ns['codestr'] = "str(12)" |
|
255 | 269 | ip.run_cell('makemacro()') |
|
256 | 270 | nt.assert_in('macro_var_expand_locals', ip.user_ns) |
|
257 | 271 | |
|
258 | 272 | def test_var_expand_self(self): |
|
259 | 273 | """Test variable expansion with the name 'self', which was failing. |
|
260 | 274 | |
|
261 | 275 | See https://github.com/ipython/ipython/issues/1878#issuecomment-7698218 |
|
262 | 276 | """ |
|
263 | 277 | ip.run_cell('class cTest:\n' |
|
264 | 278 | ' classvar="see me"\n' |
|
265 | 279 | ' def test(self):\n' |
|
266 | 280 | ' res = !echo Variable: {self.classvar}\n' |
|
267 | 281 | ' return res[0]\n') |
|
268 | 282 | nt.assert_in('see me', ip.user_ns['cTest']().test()) |
|
269 | 283 | |
|
270 | 284 | def test_bad_var_expand(self): |
|
271 | 285 | """var_expand on invalid formats shouldn't raise""" |
|
272 | 286 | # SyntaxError |
|
273 | 287 | self.assertEqual(ip.var_expand(u"{'a':5}"), u"{'a':5}") |
|
274 | 288 | # NameError |
|
275 | 289 | self.assertEqual(ip.var_expand(u"{asdf}"), u"{asdf}") |
|
276 | 290 | # ZeroDivisionError |
|
277 | 291 | self.assertEqual(ip.var_expand(u"{1/0}"), u"{1/0}") |
|
278 | 292 | |
|
279 | 293 | def test_silent_postexec(self): |
|
280 | 294 | """run_cell(silent=True) doesn't invoke pre/post_run_cell callbacks""" |
|
281 | 295 | pre_explicit = mock.Mock() |
|
282 | 296 | pre_always = mock.Mock() |
|
283 | 297 | post_explicit = mock.Mock() |
|
284 | 298 | post_always = mock.Mock() |
|
285 | 299 | |
|
286 | 300 | ip.events.register('pre_run_cell', pre_explicit) |
|
287 | 301 | ip.events.register('pre_execute', pre_always) |
|
288 | 302 | ip.events.register('post_run_cell', post_explicit) |
|
289 | 303 | ip.events.register('post_execute', post_always) |
|
290 | 304 | |
|
291 | 305 | try: |
|
292 | 306 | ip.run_cell("1", silent=True) |
|
293 | 307 | assert pre_always.called |
|
294 | 308 | assert not pre_explicit.called |
|
295 | 309 | assert post_always.called |
|
296 | 310 | assert not post_explicit.called |
|
297 | 311 | # double-check that non-silent exec did what we expected |
|
298 | 312 | # silent to avoid |
|
299 | 313 | ip.run_cell("1") |
|
300 | 314 | assert pre_explicit.called |
|
301 | 315 | assert post_explicit.called |
|
302 | 316 | finally: |
|
303 | 317 | # remove post-exec |
|
304 | 318 | ip.events.unregister('pre_run_cell', pre_explicit) |
|
305 | 319 | ip.events.unregister('pre_execute', pre_always) |
|
306 | 320 | ip.events.unregister('post_run_cell', post_explicit) |
|
307 | 321 | ip.events.unregister('post_execute', post_always) |
|
308 | 322 | |
|
309 | 323 | def test_silent_noadvance(self): |
|
310 | 324 | """run_cell(silent=True) doesn't advance execution_count""" |
|
311 | 325 | ec = ip.execution_count |
|
312 | 326 | # silent should force store_history=False |
|
313 | 327 | ip.run_cell("1", store_history=True, silent=True) |
|
314 | 328 | |
|
315 | 329 | self.assertEqual(ec, ip.execution_count) |
|
316 | 330 | # double-check that non-silent exec did what we expected |
|
317 | 331 | # silent to avoid |
|
318 | 332 | ip.run_cell("1", store_history=True) |
|
319 | 333 | self.assertEqual(ec+1, ip.execution_count) |
|
320 | 334 | |
|
321 | 335 | def test_silent_nodisplayhook(self): |
|
322 | 336 | """run_cell(silent=True) doesn't trigger displayhook""" |
|
323 | 337 | d = dict(called=False) |
|
324 | 338 | |
|
325 | 339 | trap = ip.display_trap |
|
326 | 340 | save_hook = trap.hook |
|
327 | 341 | |
|
328 | 342 | def failing_hook(*args, **kwargs): |
|
329 | 343 | d['called'] = True |
|
330 | 344 | |
|
331 | 345 | try: |
|
332 | 346 | trap.hook = failing_hook |
|
333 | ip.run_cell("1", silent=True) | |
|
347 | res = ip.run_cell("1", silent=True) | |
|
334 | 348 | self.assertFalse(d['called']) |
|
349 | self.assertIsNone(res.result) | |
|
335 | 350 | # double-check that non-silent exec did what we expected |
|
336 | 351 | # silent to avoid |
|
337 | 352 | ip.run_cell("1") |
|
338 | 353 | self.assertTrue(d['called']) |
|
339 | 354 | finally: |
|
340 | 355 | trap.hook = save_hook |
|
341 | 356 | |
|
342 | 357 | @skipif(sys.version_info[0] >= 3, "softspace removed in py3") |
|
343 | 358 | def test_print_softspace(self): |
|
344 | 359 | """Verify that softspace is handled correctly when executing multiple |
|
345 | 360 | statements. |
|
346 | 361 | |
|
347 | 362 | In [1]: print 1; print 2 |
|
348 | 363 | 1 |
|
349 | 364 | 2 |
|
350 | 365 | |
|
351 | 366 | In [2]: print 1,; print 2 |
|
352 | 367 | 1 2 |
|
353 | 368 | """ |
|
354 | 369 | |
|
355 | 370 | def test_ofind_line_magic(self): |
|
356 | 371 | from IPython.core.magic import register_line_magic |
|
357 | 372 | |
|
358 | 373 | @register_line_magic |
|
359 | 374 | def lmagic(line): |
|
360 | 375 | "A line magic" |
|
361 | 376 | |
|
362 | 377 | # Get info on line magic |
|
363 | 378 | lfind = ip._ofind('lmagic') |
|
364 | 379 | info = dict(found=True, isalias=False, ismagic=True, |
|
365 | 380 | namespace = 'IPython internal', obj= lmagic.__wrapped__, |
|
366 | 381 | parent = None) |
|
367 | 382 | nt.assert_equal(lfind, info) |
|
368 | 383 | |
|
369 | 384 | def test_ofind_cell_magic(self): |
|
370 | 385 | from IPython.core.magic import register_cell_magic |
|
371 | 386 | |
|
372 | 387 | @register_cell_magic |
|
373 | 388 | def cmagic(line, cell): |
|
374 | 389 | "A cell magic" |
|
375 | 390 | |
|
376 | 391 | # Get info on cell magic |
|
377 | 392 | find = ip._ofind('cmagic') |
|
378 | 393 | info = dict(found=True, isalias=False, ismagic=True, |
|
379 | 394 | namespace = 'IPython internal', obj= cmagic.__wrapped__, |
|
380 | 395 | parent = None) |
|
381 | 396 | nt.assert_equal(find, info) |
|
382 | 397 | |
|
383 | 398 | def test_ofind_property_with_error(self): |
|
384 | 399 | class A(object): |
|
385 | 400 | @property |
|
386 | 401 | def foo(self): |
|
387 | 402 | raise NotImplementedError() |
|
388 | 403 | a = A() |
|
389 | 404 | |
|
390 | 405 | found = ip._ofind('a.foo', [('locals', locals())]) |
|
391 | 406 | info = dict(found=True, isalias=False, ismagic=False, |
|
392 | 407 | namespace='locals', obj=A.foo, parent=a) |
|
393 | 408 | nt.assert_equal(found, info) |
|
394 | 409 | |
|
395 | 410 | def test_ofind_multiple_attribute_lookups(self): |
|
396 | 411 | class A(object): |
|
397 | 412 | @property |
|
398 | 413 | def foo(self): |
|
399 | 414 | raise NotImplementedError() |
|
400 | 415 | |
|
401 | 416 | a = A() |
|
402 | 417 | a.a = A() |
|
403 | 418 | a.a.a = A() |
|
404 | 419 | |
|
405 | 420 | found = ip._ofind('a.a.a.foo', [('locals', locals())]) |
|
406 | 421 | info = dict(found=True, isalias=False, ismagic=False, |
|
407 | 422 | namespace='locals', obj=A.foo, parent=a.a.a) |
|
408 | 423 | nt.assert_equal(found, info) |
|
409 | 424 | |
|
410 | 425 | def test_ofind_slotted_attributes(self): |
|
411 | 426 | class A(object): |
|
412 | 427 | __slots__ = ['foo'] |
|
413 | 428 | def __init__(self): |
|
414 | 429 | self.foo = 'bar' |
|
415 | 430 | |
|
416 | 431 | a = A() |
|
417 | 432 | found = ip._ofind('a.foo', [('locals', locals())]) |
|
418 | 433 | info = dict(found=True, isalias=False, ismagic=False, |
|
419 | 434 | namespace='locals', obj=a.foo, parent=a) |
|
420 | 435 | nt.assert_equal(found, info) |
|
421 | 436 | |
|
422 | 437 | found = ip._ofind('a.bar', [('locals', locals())]) |
|
423 | 438 | info = dict(found=False, isalias=False, ismagic=False, |
|
424 | 439 | namespace=None, obj=None, parent=a) |
|
425 | 440 | nt.assert_equal(found, info) |
|
426 | 441 | |
|
427 | 442 | def test_ofind_prefers_property_to_instance_level_attribute(self): |
|
428 | 443 | class A(object): |
|
429 | 444 | @property |
|
430 | 445 | def foo(self): |
|
431 | 446 | return 'bar' |
|
432 | 447 | a = A() |
|
433 | 448 | a.__dict__['foo'] = 'baz' |
|
434 | 449 | nt.assert_equal(a.foo, 'bar') |
|
435 | 450 | found = ip._ofind('a.foo', [('locals', locals())]) |
|
436 | 451 | nt.assert_is(found['obj'], A.foo) |
|
437 | 452 | |
|
438 | 453 | def test_custom_exception(self): |
|
439 | 454 | called = [] |
|
440 | 455 | def my_handler(shell, etype, value, tb, tb_offset=None): |
|
441 | 456 | called.append(etype) |
|
442 | 457 | shell.showtraceback((etype, value, tb), tb_offset=tb_offset) |
|
443 | 458 | |
|
444 | 459 | ip.set_custom_exc((ValueError,), my_handler) |
|
445 | 460 | try: |
|
446 | ip.run_cell("raise ValueError('test')") | |
|
461 | res = ip.run_cell("raise ValueError('test')") | |
|
447 | 462 | # Check that this was called, and only once. |
|
448 | 463 | self.assertEqual(called, [ValueError]) |
|
464 | # Check that the error is on the result object | |
|
465 | self.assertIsInstance(res.error_in_exec, ValueError) | |
|
449 | 466 | finally: |
|
450 | 467 | # Reset the custom exception hook |
|
451 | 468 | ip.set_custom_exc((), None) |
|
452 | 469 | |
|
453 | 470 | @skipif(sys.version_info[0] >= 3, "no differences with __future__ in py3") |
|
454 | 471 | def test_future_environment(self): |
|
455 | 472 | "Can we run code with & without the shell's __future__ imports?" |
|
456 | 473 | ip.run_cell("from __future__ import division") |
|
457 | 474 | ip.run_cell("a = 1/2", shell_futures=True) |
|
458 | 475 | self.assertEqual(ip.user_ns['a'], 0.5) |
|
459 | 476 | ip.run_cell("b = 1/2", shell_futures=False) |
|
460 | 477 | self.assertEqual(ip.user_ns['b'], 0) |
|
461 | 478 | |
|
462 | 479 | ip.compile.reset_compiler_flags() |
|
463 | 480 | # This shouldn't leak to the shell's compiler |
|
464 | 481 | ip.run_cell("from __future__ import division \nc=1/2", shell_futures=False) |
|
465 | 482 | self.assertEqual(ip.user_ns['c'], 0.5) |
|
466 | 483 | ip.run_cell("d = 1/2", shell_futures=True) |
|
467 | 484 | self.assertEqual(ip.user_ns['d'], 0) |
|
468 | 485 | |
|
469 | 486 | def test_mktempfile(self): |
|
470 | 487 | filename = ip.mktempfile() |
|
471 | 488 | # Check that we can open the file again on Windows |
|
472 | 489 | with open(filename, 'w') as f: |
|
473 | 490 | f.write('abc') |
|
474 | 491 | |
|
475 | 492 | filename = ip.mktempfile(data='blah') |
|
476 | 493 | with open(filename, 'r') as f: |
|
477 | 494 | self.assertEqual(f.read(), 'blah') |
|
478 | 495 | |
|
479 | 496 | def test_new_main_mod(self): |
|
480 | 497 | # Smoketest to check that this accepts a unicode module name |
|
481 | 498 | name = u'jiefmw' |
|
482 | 499 | mod = ip.new_main_mod(u'%s.py' % name, name) |
|
483 | 500 | self.assertEqual(mod.__name__, name) |
|
484 | 501 | |
|
485 | 502 | def test_get_exception_only(self): |
|
486 | 503 | try: |
|
487 | 504 | raise KeyboardInterrupt |
|
488 | 505 | except KeyboardInterrupt: |
|
489 | 506 | msg = ip.get_exception_only() |
|
490 | 507 | self.assertEqual(msg, 'KeyboardInterrupt\n') |
|
491 | 508 | |
|
492 | 509 | class DerivedInterrupt(KeyboardInterrupt): |
|
493 | 510 | pass |
|
494 | 511 | try: |
|
495 | 512 | raise DerivedInterrupt("foo") |
|
496 | 513 | except KeyboardInterrupt: |
|
497 | 514 | msg = ip.get_exception_only() |
|
498 | 515 | if sys.version_info[0] <= 2: |
|
499 | 516 | self.assertEqual(msg, 'DerivedInterrupt: foo\n') |
|
500 | 517 | else: |
|
501 | 518 | self.assertEqual(msg, 'IPython.core.tests.test_interactiveshell.DerivedInterrupt: foo\n') |
|
502 | 519 | |
|
503 | 520 | class TestSafeExecfileNonAsciiPath(unittest.TestCase): |
|
504 | 521 | |
|
505 | 522 | @onlyif_unicode_paths |
|
506 | 523 | def setUp(self): |
|
507 | 524 | self.BASETESTDIR = tempfile.mkdtemp() |
|
508 | 525 | self.TESTDIR = join(self.BASETESTDIR, u"Γ₯Àâ") |
|
509 | 526 | os.mkdir(self.TESTDIR) |
|
510 | 527 | with open(join(self.TESTDIR, u"Γ₯Àâtestscript.py"), "w") as sfile: |
|
511 | 528 | sfile.write("pass\n") |
|
512 | 529 | self.oldpath = py3compat.getcwd() |
|
513 | 530 | os.chdir(self.TESTDIR) |
|
514 | 531 | self.fname = u"Γ₯Àâtestscript.py" |
|
515 | 532 | |
|
516 | 533 | def tearDown(self): |
|
517 | 534 | os.chdir(self.oldpath) |
|
518 | 535 | shutil.rmtree(self.BASETESTDIR) |
|
519 | 536 | |
|
520 | 537 | @onlyif_unicode_paths |
|
521 | 538 | def test_1(self): |
|
522 | 539 | """Test safe_execfile with non-ascii path |
|
523 | 540 | """ |
|
524 | 541 | ip.safe_execfile(self.fname, {}, raise_exceptions=True) |
|
525 | 542 | |
|
526 | 543 | class ExitCodeChecks(tt.TempFileMixin): |
|
527 | 544 | def test_exit_code_ok(self): |
|
528 | 545 | self.system('exit 0') |
|
529 | 546 | self.assertEqual(ip.user_ns['_exit_code'], 0) |
|
530 | 547 | |
|
531 | 548 | def test_exit_code_error(self): |
|
532 | 549 | self.system('exit 1') |
|
533 | 550 | self.assertEqual(ip.user_ns['_exit_code'], 1) |
|
534 | 551 | |
|
535 | 552 | @skipif(not hasattr(signal, 'SIGALRM')) |
|
536 | 553 | def test_exit_code_signal(self): |
|
537 | 554 | self.mktmp("import signal, time\n" |
|
538 | 555 | "signal.setitimer(signal.ITIMER_REAL, 0.1)\n" |
|
539 | 556 | "time.sleep(1)\n") |
|
540 | 557 | self.system("%s %s" % (sys.executable, self.fname)) |
|
541 | 558 | self.assertEqual(ip.user_ns['_exit_code'], -signal.SIGALRM) |
|
542 | 559 | |
|
543 | 560 | @onlyif_cmds_exist("csh") |
|
544 | 561 | def test_exit_code_signal_csh(self): |
|
545 | 562 | SHELL = os.environ.get('SHELL', None) |
|
546 | 563 | os.environ['SHELL'] = find_cmd("csh") |
|
547 | 564 | try: |
|
548 | 565 | self.test_exit_code_signal() |
|
549 | 566 | finally: |
|
550 | 567 | if SHELL is not None: |
|
551 | 568 | os.environ['SHELL'] = SHELL |
|
552 | 569 | else: |
|
553 | 570 | del os.environ['SHELL'] |
|
554 | 571 | |
|
555 | 572 | class TestSystemRaw(unittest.TestCase, ExitCodeChecks): |
|
556 | 573 | system = ip.system_raw |
|
557 | 574 | |
|
558 | 575 | @onlyif_unicode_paths |
|
559 | 576 | def test_1(self): |
|
560 | 577 | """Test system_raw with non-ascii cmd |
|
561 | 578 | """ |
|
562 | 579 | cmd = u'''python -c "'Γ₯Àâ'" ''' |
|
563 | 580 | ip.system_raw(cmd) |
|
564 | 581 | |
|
565 | 582 | @mock.patch('subprocess.call', side_effect=KeyboardInterrupt) |
|
566 | 583 | @mock.patch('os.system', side_effect=KeyboardInterrupt) |
|
567 | 584 | def test_control_c(self, *mocks): |
|
568 | 585 | try: |
|
569 | 586 | self.system("sleep 1 # wont happen") |
|
570 | 587 | except KeyboardInterrupt: |
|
571 | 588 | self.fail("system call should intercept " |
|
572 | 589 | "keyboard interrupt from subprocess.call") |
|
573 | 590 | self.assertEqual(ip.user_ns['_exit_code'], -signal.SIGINT) |
|
574 | 591 | |
|
575 | 592 | # TODO: Exit codes are currently ignored on Windows. |
|
576 | 593 | class TestSystemPipedExitCode(unittest.TestCase, ExitCodeChecks): |
|
577 | 594 | system = ip.system_piped |
|
578 | 595 | |
|
579 | 596 | @skip_win32 |
|
580 | 597 | def test_exit_code_ok(self): |
|
581 | 598 | ExitCodeChecks.test_exit_code_ok(self) |
|
582 | 599 | |
|
583 | 600 | @skip_win32 |
|
584 | 601 | def test_exit_code_error(self): |
|
585 | 602 | ExitCodeChecks.test_exit_code_error(self) |
|
586 | 603 | |
|
587 | 604 | @skip_win32 |
|
588 | 605 | def test_exit_code_signal(self): |
|
589 | 606 | ExitCodeChecks.test_exit_code_signal(self) |
|
590 | 607 | |
|
591 | 608 | class TestModules(unittest.TestCase, tt.TempFileMixin): |
|
592 | 609 | def test_extraneous_loads(self): |
|
593 | 610 | """Test we're not loading modules on startup that we shouldn't. |
|
594 | 611 | """ |
|
595 | 612 | self.mktmp("import sys\n" |
|
596 | 613 | "print('numpy' in sys.modules)\n" |
|
597 | 614 | "print('IPython.parallel' in sys.modules)\n" |
|
598 | 615 | "print('IPython.kernel.zmq' in sys.modules)\n" |
|
599 | 616 | ) |
|
600 | 617 | out = "False\nFalse\nFalse\n" |
|
601 | 618 | tt.ipexec_validate(self.fname, out) |
|
602 | 619 | |
|
603 | 620 | class Negator(ast.NodeTransformer): |
|
604 | 621 | """Negates all number literals in an AST.""" |
|
605 | 622 | def visit_Num(self, node): |
|
606 | 623 | node.n = -node.n |
|
607 | 624 | return node |
|
608 | 625 | |
|
609 | 626 | class TestAstTransform(unittest.TestCase): |
|
610 | 627 | def setUp(self): |
|
611 | 628 | self.negator = Negator() |
|
612 | 629 | ip.ast_transformers.append(self.negator) |
|
613 | 630 | |
|
614 | 631 | def tearDown(self): |
|
615 | 632 | ip.ast_transformers.remove(self.negator) |
|
616 | 633 | |
|
617 | 634 | def test_run_cell(self): |
|
618 | 635 | with tt.AssertPrints('-34'): |
|
619 | 636 | ip.run_cell('print (12 + 22)') |
|
620 | 637 | |
|
621 | 638 | # A named reference to a number shouldn't be transformed. |
|
622 | 639 | ip.user_ns['n'] = 55 |
|
623 | 640 | with tt.AssertNotPrints('-55'): |
|
624 | 641 | ip.run_cell('print (n)') |
|
625 | 642 | |
|
626 | 643 | def test_timeit(self): |
|
627 | 644 | called = set() |
|
628 | 645 | def f(x): |
|
629 | 646 | called.add(x) |
|
630 | 647 | ip.push({'f':f}) |
|
631 | 648 | |
|
632 | 649 | with tt.AssertPrints("best of "): |
|
633 | 650 | ip.run_line_magic("timeit", "-n1 f(1)") |
|
634 | 651 | self.assertEqual(called, set([-1])) |
|
635 | 652 | called.clear() |
|
636 | 653 | |
|
637 | 654 | with tt.AssertPrints("best of "): |
|
638 | 655 | ip.run_cell_magic("timeit", "-n1 f(2)", "f(3)") |
|
639 | 656 | self.assertEqual(called, set([-2, -3])) |
|
640 | 657 | |
|
641 | 658 | def test_time(self): |
|
642 | 659 | called = [] |
|
643 | 660 | def f(x): |
|
644 | 661 | called.append(x) |
|
645 | 662 | ip.push({'f':f}) |
|
646 | 663 | |
|
647 | 664 | # Test with an expression |
|
648 | 665 | with tt.AssertPrints("Wall time: "): |
|
649 | 666 | ip.run_line_magic("time", "f(5+9)") |
|
650 | 667 | self.assertEqual(called, [-14]) |
|
651 | 668 | called[:] = [] |
|
652 | 669 | |
|
653 | 670 | # Test with a statement (different code path) |
|
654 | 671 | with tt.AssertPrints("Wall time: "): |
|
655 | 672 | ip.run_line_magic("time", "a = f(-3 + -2)") |
|
656 | 673 | self.assertEqual(called, [5]) |
|
657 | 674 | |
|
658 | 675 | def test_macro(self): |
|
659 | 676 | ip.push({'a':10}) |
|
660 | 677 | # The AST transformation makes this do a+=-1 |
|
661 | 678 | ip.define_macro("amacro", "a+=1\nprint(a)") |
|
662 | 679 | |
|
663 | 680 | with tt.AssertPrints("9"): |
|
664 | 681 | ip.run_cell("amacro") |
|
665 | 682 | with tt.AssertPrints("8"): |
|
666 | 683 | ip.run_cell("amacro") |
|
667 | 684 | |
|
668 | 685 | class IntegerWrapper(ast.NodeTransformer): |
|
669 | 686 | """Wraps all integers in a call to Integer()""" |
|
670 | 687 | def visit_Num(self, node): |
|
671 | 688 | if isinstance(node.n, int): |
|
672 | 689 | return ast.Call(func=ast.Name(id='Integer', ctx=ast.Load()), |
|
673 | 690 | args=[node], keywords=[]) |
|
674 | 691 | return node |
|
675 | 692 | |
|
676 | 693 | class TestAstTransform2(unittest.TestCase): |
|
677 | 694 | def setUp(self): |
|
678 | 695 | self.intwrapper = IntegerWrapper() |
|
679 | 696 | ip.ast_transformers.append(self.intwrapper) |
|
680 | 697 | |
|
681 | 698 | self.calls = [] |
|
682 | 699 | def Integer(*args): |
|
683 | 700 | self.calls.append(args) |
|
684 | 701 | return args |
|
685 | 702 | ip.push({"Integer": Integer}) |
|
686 | 703 | |
|
687 | 704 | def tearDown(self): |
|
688 | 705 | ip.ast_transformers.remove(self.intwrapper) |
|
689 | 706 | del ip.user_ns['Integer'] |
|
690 | 707 | |
|
691 | 708 | def test_run_cell(self): |
|
692 | 709 | ip.run_cell("n = 2") |
|
693 | 710 | self.assertEqual(self.calls, [(2,)]) |
|
694 | 711 | |
|
695 | 712 | # This shouldn't throw an error |
|
696 | 713 | ip.run_cell("o = 2.0") |
|
697 | 714 | self.assertEqual(ip.user_ns['o'], 2.0) |
|
698 | 715 | |
|
699 | 716 | def test_timeit(self): |
|
700 | 717 | called = set() |
|
701 | 718 | def f(x): |
|
702 | 719 | called.add(x) |
|
703 | 720 | ip.push({'f':f}) |
|
704 | 721 | |
|
705 | 722 | with tt.AssertPrints("best of "): |
|
706 | 723 | ip.run_line_magic("timeit", "-n1 f(1)") |
|
707 | 724 | self.assertEqual(called, set([(1,)])) |
|
708 | 725 | called.clear() |
|
709 | 726 | |
|
710 | 727 | with tt.AssertPrints("best of "): |
|
711 | 728 | ip.run_cell_magic("timeit", "-n1 f(2)", "f(3)") |
|
712 | 729 | self.assertEqual(called, set([(2,), (3,)])) |
|
713 | 730 | |
|
714 | 731 | class ErrorTransformer(ast.NodeTransformer): |
|
715 | 732 | """Throws an error when it sees a number.""" |
|
716 | 733 | def visit_Num(self, node): |
|
717 | 734 | raise ValueError("test") |
|
718 | 735 | |
|
719 | 736 | class TestAstTransformError(unittest.TestCase): |
|
720 | 737 | def test_unregistering(self): |
|
721 | 738 | err_transformer = ErrorTransformer() |
|
722 | 739 | ip.ast_transformers.append(err_transformer) |
|
723 | 740 | |
|
724 | 741 | with tt.AssertPrints("unregister", channel='stderr'): |
|
725 | 742 | ip.run_cell("1 + 2") |
|
726 | 743 | |
|
727 | 744 | # This should have been removed. |
|
728 | 745 | nt.assert_not_in(err_transformer, ip.ast_transformers) |
|
729 | 746 | |
|
730 | 747 | |
|
731 | 748 | class StringRejector(ast.NodeTransformer): |
|
732 | 749 | """Throws an InputRejected when it sees a string literal. |
|
733 | 750 | |
|
734 | 751 | Used to verify that NodeTransformers can signal that a piece of code should |
|
735 | 752 | not be executed by throwing an InputRejected. |
|
736 | 753 | """ |
|
737 | 754 | |
|
738 | 755 | def visit_Str(self, node): |
|
739 | 756 | raise InputRejected("test") |
|
740 | 757 | |
|
741 | 758 | |
|
742 | 759 | class TestAstTransformInputRejection(unittest.TestCase): |
|
743 | 760 | |
|
744 | 761 | def setUp(self): |
|
745 | 762 | self.transformer = StringRejector() |
|
746 | 763 | ip.ast_transformers.append(self.transformer) |
|
747 | 764 | |
|
748 | 765 | def tearDown(self): |
|
749 | 766 | ip.ast_transformers.remove(self.transformer) |
|
750 | 767 | |
|
751 | 768 | def test_input_rejection(self): |
|
752 | 769 | """Check that NodeTransformers can reject input.""" |
|
753 | 770 | |
|
754 | 771 | expect_exception_tb = tt.AssertPrints("InputRejected: test") |
|
755 | 772 | expect_no_cell_output = tt.AssertNotPrints("'unsafe'", suppress=False) |
|
756 | 773 | |
|
757 | 774 | # Run the same check twice to verify that the transformer is not |
|
758 | 775 | # disabled after raising. |
|
759 | 776 | with expect_exception_tb, expect_no_cell_output: |
|
760 | 777 | ip.run_cell("'unsafe'") |
|
761 | 778 | |
|
762 | 779 | with expect_exception_tb, expect_no_cell_output: |
|
763 | ip.run_cell("'unsafe'") | |
|
780 | res = ip.run_cell("'unsafe'") | |
|
781 | ||
|
782 | self.assertIsInstance(res.error_before_exec, InputRejected) | |
|
764 | 783 | |
|
765 | 784 | def test__IPYTHON__(): |
|
766 | 785 | # This shouldn't raise a NameError, that's all |
|
767 | 786 | __IPYTHON__ |
|
768 | 787 | |
|
769 | 788 | |
|
770 | 789 | class DummyRepr(object): |
|
771 | 790 | def __repr__(self): |
|
772 | 791 | return "DummyRepr" |
|
773 | 792 | |
|
774 | 793 | def _repr_html_(self): |
|
775 | 794 | return "<b>dummy</b>" |
|
776 | 795 | |
|
777 | 796 | def _repr_javascript_(self): |
|
778 | 797 | return "console.log('hi');", {'key': 'value'} |
|
779 | 798 | |
|
780 | 799 | |
|
781 | 800 | def test_user_variables(): |
|
782 | 801 | # enable all formatters |
|
783 | 802 | ip.display_formatter.active_types = ip.display_formatter.format_types |
|
784 | 803 | |
|
785 | 804 | ip.user_ns['dummy'] = d = DummyRepr() |
|
786 | 805 | keys = set(['dummy', 'doesnotexist']) |
|
787 | 806 | r = ip.user_expressions({ key:key for key in keys}) |
|
788 | 807 | |
|
789 | 808 | nt.assert_equal(keys, set(r.keys())) |
|
790 | 809 | dummy = r['dummy'] |
|
791 | 810 | nt.assert_equal(set(['status', 'data', 'metadata']), set(dummy.keys())) |
|
792 | 811 | nt.assert_equal(dummy['status'], 'ok') |
|
793 | 812 | data = dummy['data'] |
|
794 | 813 | metadata = dummy['metadata'] |
|
795 | 814 | nt.assert_equal(data.get('text/html'), d._repr_html_()) |
|
796 | 815 | js, jsmd = d._repr_javascript_() |
|
797 | 816 | nt.assert_equal(data.get('application/javascript'), js) |
|
798 | 817 | nt.assert_equal(metadata.get('application/javascript'), jsmd) |
|
799 | 818 | |
|
800 | 819 | dne = r['doesnotexist'] |
|
801 | 820 | nt.assert_equal(dne['status'], 'error') |
|
802 | 821 | nt.assert_equal(dne['ename'], 'NameError') |
|
803 | 822 | |
|
804 | 823 | # back to text only |
|
805 | 824 | ip.display_formatter.active_types = ['text/plain'] |
|
806 | 825 | |
|
807 | 826 | def test_user_expression(): |
|
808 | 827 | # enable all formatters |
|
809 | 828 | ip.display_formatter.active_types = ip.display_formatter.format_types |
|
810 | 829 | query = { |
|
811 | 830 | 'a' : '1 + 2', |
|
812 | 831 | 'b' : '1/0', |
|
813 | 832 | } |
|
814 | 833 | r = ip.user_expressions(query) |
|
815 | 834 | import pprint |
|
816 | 835 | pprint.pprint(r) |
|
817 | 836 | nt.assert_equal(set(r.keys()), set(query.keys())) |
|
818 | 837 | a = r['a'] |
|
819 | 838 | nt.assert_equal(set(['status', 'data', 'metadata']), set(a.keys())) |
|
820 | 839 | nt.assert_equal(a['status'], 'ok') |
|
821 | 840 | data = a['data'] |
|
822 | 841 | metadata = a['metadata'] |
|
823 | 842 | nt.assert_equal(data.get('text/plain'), '3') |
|
824 | 843 | |
|
825 | 844 | b = r['b'] |
|
826 | 845 | nt.assert_equal(b['status'], 'error') |
|
827 | 846 | nt.assert_equal(b['ename'], 'ZeroDivisionError') |
|
828 | 847 | |
|
829 | 848 | # back to text only |
|
830 | 849 | ip.display_formatter.active_types = ['text/plain'] |
|
831 | 850 | |
|
832 | 851 | |
|
833 | 852 | |
|
834 | 853 | |
|
835 | 854 | |
|
836 | 855 | class TestSyntaxErrorTransformer(unittest.TestCase): |
|
837 | 856 | """Check that SyntaxError raised by an input transformer is handled by run_cell()""" |
|
838 | 857 | |
|
839 | 858 | class SyntaxErrorTransformer(InputTransformer): |
|
840 | 859 | |
|
841 | 860 | def push(self, line): |
|
842 | 861 | pos = line.find('syntaxerror') |
|
843 | 862 | if pos >= 0: |
|
844 | 863 | e = SyntaxError('input contains "syntaxerror"') |
|
845 | 864 | e.text = line |
|
846 | 865 | e.offset = pos + 1 |
|
847 | 866 | raise e |
|
848 | 867 | return line |
|
849 | 868 | |
|
850 | 869 | def reset(self): |
|
851 | 870 | pass |
|
852 | 871 | |
|
853 | 872 | def setUp(self): |
|
854 | 873 | self.transformer = TestSyntaxErrorTransformer.SyntaxErrorTransformer() |
|
855 | 874 | ip.input_splitter.python_line_transforms.append(self.transformer) |
|
856 | 875 | ip.input_transformer_manager.python_line_transforms.append(self.transformer) |
|
857 | 876 | |
|
858 | 877 | def tearDown(self): |
|
859 | 878 | ip.input_splitter.python_line_transforms.remove(self.transformer) |
|
860 | 879 | ip.input_transformer_manager.python_line_transforms.remove(self.transformer) |
|
861 | 880 | |
|
862 | 881 | def test_syntaxerror_input_transformer(self): |
|
863 | 882 | with tt.AssertPrints('1234'): |
|
864 | 883 | ip.run_cell('1234') |
|
865 | 884 | with tt.AssertPrints('SyntaxError: invalid syntax'): |
|
866 | 885 | ip.run_cell('1 2 3') # plain python syntax error |
|
867 | 886 | with tt.AssertPrints('SyntaxError: input contains "syntaxerror"'): |
|
868 | 887 | ip.run_cell('2345 # syntaxerror') # input transformer syntax error |
|
869 | 888 | with tt.AssertPrints('3456'): |
|
870 | 889 | ip.run_cell('3456') |
|
871 | 890 | |
|
872 | 891 | |
|
873 | 892 | |
|
874 | 893 | def test_warning_suppression(): |
|
875 | 894 | ip.run_cell("import warnings") |
|
876 | 895 | try: |
|
877 | 896 | with tt.AssertPrints("UserWarning: asdf", channel="stderr"): |
|
878 | 897 | ip.run_cell("warnings.warn('asdf')") |
|
879 | 898 | # Here's the real test -- if we run that again, we should get the |
|
880 | 899 | # warning again. Traditionally, each warning was only issued once per |
|
881 | 900 | # IPython session (approximately), even if the user typed in new and |
|
882 | 901 | # different code that should have also triggered the warning, leading |
|
883 | 902 | # to much confusion. |
|
884 | 903 | with tt.AssertPrints("UserWarning: asdf", channel="stderr"): |
|
885 | 904 | ip.run_cell("warnings.warn('asdf')") |
|
886 | 905 | finally: |
|
887 | 906 | ip.run_cell("del warnings") |
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