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@@ -1,875 +1,885 b'' | |||
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1 | 1 | # -*- coding: utf-8 -*- |
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2 | 2 | """Tools for inspecting Python objects. |
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3 | 3 | |
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4 | 4 | Uses syntax highlighting for presenting the various information elements. |
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5 | 5 | |
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6 | 6 | Similar in spirit to the inspect module, but all calls take a name argument to |
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7 | 7 | reference the name under which an object is being read. |
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8 | 8 | """ |
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9 | 9 | |
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10 | 10 | #***************************************************************************** |
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11 | 11 | # Copyright (C) 2001-2004 Fernando Perez <fperez@colorado.edu> |
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12 | 12 | # |
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13 | 13 | # Distributed under the terms of the BSD License. The full license is in |
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14 | 14 | # the file COPYING, distributed as part of this software. |
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15 | 15 | #***************************************************************************** |
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16 | 16 | from __future__ import print_function |
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17 | 17 | |
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18 | 18 | __all__ = ['Inspector','InspectColors'] |
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19 | 19 | |
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20 | 20 | # stdlib modules |
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21 | 21 | import __builtin__ |
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22 | 22 | import inspect |
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23 | 23 | import linecache |
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24 | 24 | import os |
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25 | 25 | import sys |
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26 | 26 | import types |
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27 | 27 | import io as stdlib_io |
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28 | 28 | |
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29 | 29 | from collections import namedtuple |
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30 | 30 | try: |
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31 | 31 | from itertools import izip_longest |
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32 | 32 | except ImportError: |
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33 | 33 | from itertools import zip_longest as izip_longest |
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34 | 34 | |
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35 | 35 | # IPython's own |
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36 | 36 | from IPython.core import page |
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37 | 37 | from IPython.testing.skipdoctest import skip_doctest_py3 |
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38 | 38 | from IPython.utils import PyColorize |
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39 | 39 | from IPython.utils import io |
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40 | 40 | from IPython.utils import openpy |
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41 | 41 | from IPython.utils import py3compat |
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42 | 42 | from IPython.utils.text import indent |
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43 | 43 | from IPython.utils.wildcard import list_namespace |
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44 | 44 | from IPython.utils.coloransi import * |
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45 | 45 | from IPython.utils.py3compat import cast_unicode |
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46 | 46 | |
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47 | 47 | #**************************************************************************** |
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48 | 48 | # Builtin color schemes |
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49 | 49 | |
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50 | 50 | Colors = TermColors # just a shorthand |
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51 | 51 | |
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52 | 52 | # Build a few color schemes |
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53 | 53 | NoColor = ColorScheme( |
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54 | 54 | 'NoColor',{ |
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55 | 55 | 'header' : Colors.NoColor, |
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56 | 56 | 'normal' : Colors.NoColor # color off (usu. Colors.Normal) |
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57 | 57 | } ) |
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58 | 58 | |
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59 | 59 | LinuxColors = ColorScheme( |
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60 | 60 | 'Linux',{ |
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61 | 61 | 'header' : Colors.LightRed, |
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62 | 62 | 'normal' : Colors.Normal # color off (usu. Colors.Normal) |
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63 | 63 | } ) |
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64 | 64 | |
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65 | 65 | LightBGColors = ColorScheme( |
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66 | 66 | 'LightBG',{ |
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67 | 67 | 'header' : Colors.Red, |
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68 | 68 | 'normal' : Colors.Normal # color off (usu. Colors.Normal) |
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69 | 69 | } ) |
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70 | 70 | |
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71 | 71 | # Build table of color schemes (needed by the parser) |
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72 | 72 | InspectColors = ColorSchemeTable([NoColor,LinuxColors,LightBGColors], |
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73 | 73 | 'Linux') |
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74 | 74 | |
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75 | 75 | #**************************************************************************** |
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76 | 76 | # Auxiliary functions and objects |
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77 | 77 | |
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78 | 78 | # See the messaging spec for the definition of all these fields. This list |
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79 | 79 | # effectively defines the order of display |
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80 | 80 | info_fields = ['type_name', 'base_class', 'string_form', 'namespace', |
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81 | 81 | 'length', 'file', 'definition', 'docstring', 'source', |
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82 | 82 | 'init_definition', 'class_docstring', 'init_docstring', |
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83 | 83 | 'call_def', 'call_docstring', |
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84 | 84 | # These won't be printed but will be used to determine how to |
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85 | 85 | # format the object |
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86 | 86 | 'ismagic', 'isalias', 'isclass', 'argspec', 'found', 'name' |
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87 | 87 | ] |
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88 | 88 | |
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89 | 89 | |
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90 | 90 | def object_info(**kw): |
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91 | 91 | """Make an object info dict with all fields present.""" |
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92 | 92 | infodict = dict(izip_longest(info_fields, [None])) |
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93 | 93 | infodict.update(kw) |
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94 | 94 | return infodict |
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95 | 95 | |
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96 | 96 | |
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97 | 97 | def get_encoding(obj): |
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98 | 98 | """Get encoding for python source file defining obj |
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99 | 99 | |
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100 | 100 | Returns None if obj is not defined in a sourcefile. |
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101 | 101 | """ |
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102 | 102 | ofile = find_file(obj) |
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103 | 103 | # run contents of file through pager starting at line where the object |
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104 | 104 | # is defined, as long as the file isn't binary and is actually on the |
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105 | 105 | # filesystem. |
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106 | 106 | if ofile is None: |
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107 | 107 | return None |
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108 | 108 | elif ofile.endswith(('.so', '.dll', '.pyd')): |
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109 | 109 | return None |
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110 | 110 | elif not os.path.isfile(ofile): |
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111 | 111 | return None |
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112 | 112 | else: |
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113 | 113 | # Print only text files, not extension binaries. Note that |
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114 | 114 | # getsourcelines returns lineno with 1-offset and page() uses |
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115 | 115 | # 0-offset, so we must adjust. |
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116 | 116 | buffer = stdlib_io.open(ofile, 'rb') # Tweaked to use io.open for Python 2 |
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117 | 117 | encoding, lines = openpy.detect_encoding(buffer.readline) |
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118 | 118 | return encoding |
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119 | 119 | |
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120 | 120 | def getdoc(obj): |
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121 | 121 | """Stable wrapper around inspect.getdoc. |
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122 | 122 | |
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123 | 123 | This can't crash because of attribute problems. |
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124 | 124 | |
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125 | 125 | It also attempts to call a getdoc() method on the given object. This |
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126 | 126 | allows objects which provide their docstrings via non-standard mechanisms |
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127 | 127 | (like Pyro proxies) to still be inspected by ipython's ? system.""" |
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128 | 128 | # Allow objects to offer customized documentation via a getdoc method: |
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129 | 129 | try: |
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130 | 130 | ds = obj.getdoc() |
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131 | 131 | except Exception: |
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132 | 132 | pass |
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133 | 133 | else: |
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134 | 134 | # if we get extra info, we add it to the normal docstring. |
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135 | 135 | if isinstance(ds, basestring): |
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136 | 136 | return inspect.cleandoc(ds) |
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137 | 137 | |
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138 | 138 | try: |
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139 | 139 | docstr = inspect.getdoc(obj) |
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140 | 140 | encoding = get_encoding(obj) |
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141 | 141 | return py3compat.cast_unicode(docstr, encoding=encoding) |
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142 | 142 | except Exception: |
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143 | 143 | # Harden against an inspect failure, which can occur with |
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144 | 144 | # SWIG-wrapped extensions. |
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145 | 145 | raise |
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146 | 146 | return None |
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147 | 147 | |
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148 | 148 | |
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149 | 149 | def getsource(obj,is_binary=False): |
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150 | 150 | """Wrapper around inspect.getsource. |
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151 | 151 | |
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152 | 152 | This can be modified by other projects to provide customized source |
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153 | 153 | extraction. |
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154 | 154 | |
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155 | 155 | Inputs: |
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156 | 156 | |
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157 | 157 | - obj: an object whose source code we will attempt to extract. |
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158 | 158 | |
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159 | 159 | Optional inputs: |
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160 | 160 | |
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161 | 161 | - is_binary: whether the object is known to come from a binary source. |
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162 | 162 | This implementation will skip returning any output for binary objects, but |
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163 | 163 | custom extractors may know how to meaningfully process them.""" |
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164 | 164 | |
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165 | 165 | if is_binary: |
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166 | 166 | return None |
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167 | 167 | else: |
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168 | 168 | # get source if obj was decorated with @decorator |
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169 | 169 | if hasattr(obj,"__wrapped__"): |
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170 | 170 | obj = obj.__wrapped__ |
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171 | 171 | try: |
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172 | 172 | src = inspect.getsource(obj) |
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173 | 173 | except TypeError: |
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174 | 174 | if hasattr(obj,'__class__'): |
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175 | 175 | src = inspect.getsource(obj.__class__) |
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176 | 176 | encoding = get_encoding(obj) |
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177 | 177 | return cast_unicode(src, encoding=encoding) |
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178 | 178 | |
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179 | 179 | def getargspec(obj): |
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180 | 180 | """Get the names and default values of a function's arguments. |
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181 | 181 | |
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182 | 182 | A tuple of four things is returned: (args, varargs, varkw, defaults). |
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183 | 183 | 'args' is a list of the argument names (it may contain nested lists). |
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184 | 184 | 'varargs' and 'varkw' are the names of the * and ** arguments or None. |
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185 | 185 | 'defaults' is an n-tuple of the default values of the last n arguments. |
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186 | 186 | |
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187 | 187 | Modified version of inspect.getargspec from the Python Standard |
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188 | 188 | Library.""" |
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189 | 189 | |
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190 | 190 | if inspect.isfunction(obj): |
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191 | 191 | func_obj = obj |
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192 | 192 | elif inspect.ismethod(obj): |
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193 | 193 | func_obj = obj.im_func |
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194 | 194 | elif hasattr(obj, '__call__'): |
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195 | 195 | func_obj = obj.__call__ |
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196 | 196 | else: |
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197 | 197 | raise TypeError('arg is not a Python function') |
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198 | 198 | args, varargs, varkw = inspect.getargs(func_obj.func_code) |
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199 | 199 | return args, varargs, varkw, func_obj.func_defaults |
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200 | 200 | |
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201 | 201 | |
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202 | 202 | def format_argspec(argspec): |
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203 | 203 | """Format argspect, convenience wrapper around inspect's. |
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204 | 204 | |
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205 | 205 | This takes a dict instead of ordered arguments and calls |
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206 | 206 | inspect.format_argspec with the arguments in the necessary order. |
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207 | 207 | """ |
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208 | 208 | return inspect.formatargspec(argspec['args'], argspec['varargs'], |
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209 | 209 | argspec['varkw'], argspec['defaults']) |
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210 | 210 | |
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211 | 211 | |
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212 | 212 | def call_tip(oinfo, format_call=True): |
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213 | 213 | """Extract call tip data from an oinfo dict. |
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214 | 214 | |
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215 | 215 | Parameters |
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216 | 216 | ---------- |
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217 | 217 | oinfo : dict |
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218 | 218 | |
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219 | 219 | format_call : bool, optional |
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220 | 220 | If True, the call line is formatted and returned as a string. If not, a |
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221 | 221 | tuple of (name, argspec) is returned. |
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222 | 222 | |
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223 | 223 | Returns |
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224 | 224 | ------- |
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225 | 225 | call_info : None, str or (str, dict) tuple. |
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226 | 226 | When format_call is True, the whole call information is formattted as a |
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227 | 227 | single string. Otherwise, the object's name and its argspec dict are |
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228 | 228 | returned. If no call information is available, None is returned. |
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229 | 229 | |
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230 | 230 | docstring : str or None |
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231 | 231 | The most relevant docstring for calling purposes is returned, if |
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232 | 232 | available. The priority is: call docstring for callable instances, then |
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233 | 233 | constructor docstring for classes, then main object's docstring otherwise |
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234 | 234 | (regular functions). |
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235 | 235 | """ |
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236 | 236 | # Get call definition |
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237 | 237 | argspec = oinfo.get('argspec') |
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238 | 238 | if argspec is None: |
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239 | 239 | call_line = None |
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240 | 240 | else: |
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241 | 241 | # Callable objects will have 'self' as their first argument, prune |
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242 | 242 | # it out if it's there for clarity (since users do *not* pass an |
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243 | 243 | # extra first argument explicitly). |
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244 | 244 | try: |
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245 | 245 | has_self = argspec['args'][0] == 'self' |
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246 | 246 | except (KeyError, IndexError): |
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247 | 247 | pass |
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248 | 248 | else: |
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249 | 249 | if has_self: |
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250 | 250 | argspec['args'] = argspec['args'][1:] |
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251 | 251 | |
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252 | 252 | call_line = oinfo['name']+format_argspec(argspec) |
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253 | 253 | |
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254 | 254 | # Now get docstring. |
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255 | 255 | # The priority is: call docstring, constructor docstring, main one. |
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256 | 256 | doc = oinfo.get('call_docstring') |
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257 | 257 | if doc is None: |
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258 | 258 | doc = oinfo.get('init_docstring') |
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259 | 259 | if doc is None: |
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260 | 260 | doc = oinfo.get('docstring','') |
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261 | 261 | |
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262 | 262 | return call_line, doc |
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263 | 263 | |
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264 | def safe_hasattr(obj, attr): | |
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265 | """In recent versions of Python, hasattr() only catches AttributeError. | |
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266 | This catches all errors. | |
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267 | """ | |
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268 | try: | |
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269 | getattr(obj, attr) | |
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270 | return True | |
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271 | except: | |
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272 | return False | |
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273 | ||
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264 | 274 | |
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265 | 275 | def find_file(obj): |
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266 | 276 | """Find the absolute path to the file where an object was defined. |
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267 | 277 | |
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268 | 278 | This is essentially a robust wrapper around `inspect.getabsfile`. |
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269 | 279 | |
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270 | 280 | Returns None if no file can be found. |
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271 | 281 | |
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272 | 282 | Parameters |
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273 | 283 | ---------- |
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274 | 284 | obj : any Python object |
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275 | 285 | |
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276 | 286 | Returns |
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277 | 287 | ------- |
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278 | 288 | fname : str |
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279 | 289 | The absolute path to the file where the object was defined. |
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280 | 290 | """ |
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281 | 291 | # get source if obj was decorated with @decorator |
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282 | if hasattr(obj, '__wrapped__'): | |
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292 | if safe_hasattr(obj, '__wrapped__'): | |
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283 | 293 | obj = obj.__wrapped__ |
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284 | 294 | |
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285 | 295 | fname = None |
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286 | 296 | try: |
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287 | 297 | fname = inspect.getabsfile(obj) |
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288 | 298 | except TypeError: |
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289 | 299 | # For an instance, the file that matters is where its class was |
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290 | 300 | # declared. |
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291 | 301 | if hasattr(obj, '__class__'): |
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292 | 302 | try: |
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293 | 303 | fname = inspect.getabsfile(obj.__class__) |
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294 | 304 | except TypeError: |
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295 | 305 | # Can happen for builtins |
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296 | 306 | pass |
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297 | 307 | except: |
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298 | 308 | pass |
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299 | 309 | return cast_unicode(fname) |
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300 | 310 | |
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301 | 311 | |
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302 | 312 | def find_source_lines(obj): |
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303 | 313 | """Find the line number in a file where an object was defined. |
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304 | 314 | |
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305 | 315 | This is essentially a robust wrapper around `inspect.getsourcelines`. |
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306 | 316 | |
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307 | 317 | Returns None if no file can be found. |
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308 | 318 | |
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309 | 319 | Parameters |
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310 | 320 | ---------- |
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311 | 321 | obj : any Python object |
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312 | 322 | |
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313 | 323 | Returns |
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314 | 324 | ------- |
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315 | 325 | lineno : int |
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316 | 326 | The line number where the object definition starts. |
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317 | 327 | """ |
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318 | 328 | # get source if obj was decorated with @decorator |
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319 | if hasattr(obj, '__wrapped__'): | |
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329 | if safe_hasattr(obj, '__wrapped__'): | |
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320 | 330 | obj = obj.__wrapped__ |
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321 | 331 | |
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322 | 332 | try: |
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323 | 333 | try: |
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324 | 334 | lineno = inspect.getsourcelines(obj)[1] |
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325 | 335 | except TypeError: |
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326 | 336 | # For instances, try the class object like getsource() does |
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327 | 337 | if hasattr(obj, '__class__'): |
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328 | 338 | lineno = inspect.getsourcelines(obj.__class__)[1] |
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329 | 339 | else: |
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330 | 340 | lineno = None |
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331 | 341 | except: |
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332 | 342 | return None |
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333 | 343 | |
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334 | 344 | return lineno |
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335 | 345 | |
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336 | 346 | |
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337 | 347 | class Inspector: |
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338 | 348 | def __init__(self, color_table=InspectColors, |
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339 | 349 | code_color_table=PyColorize.ANSICodeColors, |
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340 | 350 | scheme='NoColor', |
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341 | 351 | str_detail_level=0): |
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342 | 352 | self.color_table = color_table |
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343 | 353 | self.parser = PyColorize.Parser(code_color_table,out='str') |
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344 | 354 | self.format = self.parser.format |
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345 | 355 | self.str_detail_level = str_detail_level |
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346 | 356 | self.set_active_scheme(scheme) |
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347 | 357 | |
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348 | 358 | def _getdef(self,obj,oname=''): |
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349 | 359 | """Return the call signature for any callable object. |
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350 | 360 | |
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351 | 361 | If any exception is generated, None is returned instead and the |
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352 | 362 | exception is suppressed.""" |
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353 | 363 | |
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354 | 364 | try: |
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355 | 365 | hdef = oname + inspect.formatargspec(*getargspec(obj)) |
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356 | 366 | return cast_unicode(hdef) |
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357 | 367 | except: |
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358 | 368 | return None |
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359 | 369 | |
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360 | 370 | def __head(self,h): |
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361 | 371 | """Return a header string with proper colors.""" |
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362 | 372 | return '%s%s%s' % (self.color_table.active_colors.header,h, |
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363 | 373 | self.color_table.active_colors.normal) |
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364 | 374 | |
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365 | 375 | def set_active_scheme(self, scheme): |
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366 | 376 | self.color_table.set_active_scheme(scheme) |
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367 | 377 | self.parser.color_table.set_active_scheme(scheme) |
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368 | 378 | |
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369 | 379 | def noinfo(self, msg, oname): |
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370 | 380 | """Generic message when no information is found.""" |
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371 | 381 | print('No %s found' % msg, end=' ') |
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372 | 382 | if oname: |
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373 | 383 | print('for %s' % oname) |
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374 | 384 | else: |
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375 | 385 | print() |
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376 | 386 | |
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377 | 387 | def pdef(self, obj, oname=''): |
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378 | 388 | """Print the call signature for any callable object. |
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379 | 389 | |
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380 | 390 | If the object is a class, print the constructor information.""" |
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381 | 391 | |
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382 | 392 | if not callable(obj): |
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383 | 393 | print('Object is not callable.') |
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384 | 394 | return |
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385 | 395 | |
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386 | 396 | header = '' |
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387 | 397 | |
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388 | 398 | if inspect.isclass(obj): |
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389 | 399 | header = self.__head('Class constructor information:\n') |
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390 | 400 | obj = obj.__init__ |
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391 | 401 | elif (not py3compat.PY3) and type(obj) is types.InstanceType: |
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392 | 402 | obj = obj.__call__ |
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393 | 403 | |
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394 | 404 | output = self._getdef(obj,oname) |
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395 | 405 | if output is None: |
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396 | 406 | self.noinfo('definition header',oname) |
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397 | 407 | else: |
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398 | 408 | print(header,self.format(output), end=' ', file=io.stdout) |
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399 | 409 | |
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400 | 410 | # In Python 3, all classes are new-style, so they all have __init__. |
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401 | 411 | @skip_doctest_py3 |
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402 | 412 | def pdoc(self,obj,oname='',formatter = None): |
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403 | 413 | """Print the docstring for any object. |
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404 | 414 | |
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405 | 415 | Optional: |
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406 | 416 | -formatter: a function to run the docstring through for specially |
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407 | 417 | formatted docstrings. |
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408 | 418 | |
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409 | 419 | Examples |
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410 | 420 | -------- |
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411 | 421 | |
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412 | 422 | In [1]: class NoInit: |
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413 | 423 | ...: pass |
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414 | 424 | |
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415 | 425 | In [2]: class NoDoc: |
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416 | 426 | ...: def __init__(self): |
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417 | 427 | ...: pass |
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418 | 428 | |
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419 | 429 | In [3]: %pdoc NoDoc |
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420 | 430 | No documentation found for NoDoc |
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421 | 431 | |
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422 | 432 | In [4]: %pdoc NoInit |
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423 | 433 | No documentation found for NoInit |
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424 | 434 | |
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425 | 435 | In [5]: obj = NoInit() |
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426 | 436 | |
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427 | 437 | In [6]: %pdoc obj |
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428 | 438 | No documentation found for obj |
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429 | 439 | |
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430 | 440 | In [5]: obj2 = NoDoc() |
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431 | 441 | |
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432 | 442 | In [6]: %pdoc obj2 |
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433 | 443 | No documentation found for obj2 |
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434 | 444 | """ |
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435 | 445 | |
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436 | 446 | head = self.__head # For convenience |
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437 | 447 | lines = [] |
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438 | 448 | ds = getdoc(obj) |
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439 | 449 | if formatter: |
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440 | 450 | ds = formatter(ds) |
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441 | 451 | if ds: |
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442 | 452 | lines.append(head("Class Docstring:")) |
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443 | 453 | lines.append(indent(ds)) |
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444 | 454 | if inspect.isclass(obj) and hasattr(obj, '__init__'): |
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445 | 455 | init_ds = getdoc(obj.__init__) |
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446 | 456 | if init_ds is not None: |
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447 | 457 | lines.append(head("Constructor Docstring:")) |
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448 | 458 | lines.append(indent(init_ds)) |
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449 | 459 | elif hasattr(obj,'__call__'): |
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450 | 460 | call_ds = getdoc(obj.__call__) |
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451 | 461 | if call_ds: |
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452 | 462 | lines.append(head("Calling Docstring:")) |
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453 | 463 | lines.append(indent(call_ds)) |
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454 | 464 | |
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455 | 465 | if not lines: |
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456 | 466 | self.noinfo('documentation',oname) |
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457 | 467 | else: |
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458 | 468 | page.page('\n'.join(lines)) |
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459 | 469 | |
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460 | 470 | def psource(self,obj,oname=''): |
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461 | 471 | """Print the source code for an object.""" |
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462 | 472 | |
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463 | 473 | # Flush the source cache because inspect can return out-of-date source |
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464 | 474 | linecache.checkcache() |
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465 | 475 | try: |
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466 | 476 | src = getsource(obj) |
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467 | 477 | except: |
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468 | 478 | self.noinfo('source',oname) |
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469 | 479 | else: |
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470 | 480 | page.page(self.format(src)) |
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471 | 481 | |
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472 | 482 | def pfile(self, obj, oname=''): |
|
473 | 483 | """Show the whole file where an object was defined.""" |
|
474 | 484 | |
|
475 | 485 | lineno = find_source_lines(obj) |
|
476 | 486 | if lineno is None: |
|
477 | 487 | self.noinfo('file', oname) |
|
478 | 488 | return |
|
479 | 489 | |
|
480 | 490 | ofile = find_file(obj) |
|
481 | 491 | # run contents of file through pager starting at line where the object |
|
482 | 492 | # is defined, as long as the file isn't binary and is actually on the |
|
483 | 493 | # filesystem. |
|
484 | 494 | if ofile.endswith(('.so', '.dll', '.pyd')): |
|
485 | 495 | print('File %r is binary, not printing.' % ofile) |
|
486 | 496 | elif not os.path.isfile(ofile): |
|
487 | 497 | print('File %r does not exist, not printing.' % ofile) |
|
488 | 498 | else: |
|
489 | 499 | # Print only text files, not extension binaries. Note that |
|
490 | 500 | # getsourcelines returns lineno with 1-offset and page() uses |
|
491 | 501 | # 0-offset, so we must adjust. |
|
492 | 502 | page.page(self.format(openpy.read_py_file(ofile, skip_encoding_cookie=False)), lineno - 1) |
|
493 | 503 | |
|
494 | 504 | def _format_fields(self, fields, title_width=12): |
|
495 | 505 | """Formats a list of fields for display. |
|
496 | 506 | |
|
497 | 507 | Parameters |
|
498 | 508 | ---------- |
|
499 | 509 | fields : list |
|
500 | 510 | A list of 2-tuples: (field_title, field_content) |
|
501 | 511 | title_width : int |
|
502 | 512 | How many characters to pad titles to. Default 12. |
|
503 | 513 | """ |
|
504 | 514 | out = [] |
|
505 | 515 | header = self.__head |
|
506 | 516 | for title, content in fields: |
|
507 | 517 | if len(content.splitlines()) > 1: |
|
508 | 518 | title = header(title + ":") + "\n" |
|
509 | 519 | else: |
|
510 | 520 | title = header((title+":").ljust(title_width)) |
|
511 | 521 | out.append(cast_unicode(title) + cast_unicode(content)) |
|
512 | 522 | return "\n".join(out) |
|
513 | 523 | |
|
514 | 524 | # The fields to be displayed by pinfo: (fancy_name, key_in_info_dict) |
|
515 | 525 | pinfo_fields1 = [("Type", "type_name"), |
|
516 | 526 | ] |
|
517 | 527 | |
|
518 | 528 | pinfo_fields2 = [("String Form", "string_form"), |
|
519 | 529 | ] |
|
520 | 530 | |
|
521 | 531 | pinfo_fields3 = [("Length", "length"), |
|
522 | 532 | ("File", "file"), |
|
523 | 533 | ("Definition", "definition"), |
|
524 | 534 | ] |
|
525 | 535 | |
|
526 | 536 | pinfo_fields_obj = [("Class Docstring", "class_docstring"), |
|
527 | 537 | ("Constructor Docstring","init_docstring"), |
|
528 | 538 | ("Call def", "call_def"), |
|
529 | 539 | ("Call docstring", "call_docstring")] |
|
530 | 540 | |
|
531 | 541 | def pinfo(self,obj,oname='',formatter=None,info=None,detail_level=0): |
|
532 | 542 | """Show detailed information about an object. |
|
533 | 543 | |
|
534 | 544 | Optional arguments: |
|
535 | 545 | |
|
536 | 546 | - oname: name of the variable pointing to the object. |
|
537 | 547 | |
|
538 | 548 | - formatter: special formatter for docstrings (see pdoc) |
|
539 | 549 | |
|
540 | 550 | - info: a structure with some information fields which may have been |
|
541 | 551 | precomputed already. |
|
542 | 552 | |
|
543 | 553 | - detail_level: if set to 1, more information is given. |
|
544 | 554 | """ |
|
545 | 555 | info = self.info(obj, oname=oname, formatter=formatter, |
|
546 | 556 | info=info, detail_level=detail_level) |
|
547 | 557 | displayfields = [] |
|
548 | 558 | def add_fields(fields): |
|
549 | 559 | for title, key in fields: |
|
550 | 560 | field = info[key] |
|
551 | 561 | if field is not None: |
|
552 | 562 | displayfields.append((title, field.rstrip())) |
|
553 | 563 | |
|
554 | 564 | add_fields(self.pinfo_fields1) |
|
555 | 565 | |
|
556 | 566 | # Base class for old-style instances |
|
557 | 567 | if (not py3compat.PY3) and isinstance(obj, types.InstanceType) and info['base_class']: |
|
558 | 568 | displayfields.append(("Base Class", info['base_class'].rstrip())) |
|
559 | 569 | |
|
560 | 570 | add_fields(self.pinfo_fields2) |
|
561 | 571 | |
|
562 | 572 | # Namespace |
|
563 | 573 | if info['namespace'] != 'Interactive': |
|
564 | 574 | displayfields.append(("Namespace", info['namespace'].rstrip())) |
|
565 | 575 | |
|
566 | 576 | add_fields(self.pinfo_fields3) |
|
567 | 577 | |
|
568 | 578 | # Source or docstring, depending on detail level and whether |
|
569 | 579 | # source found. |
|
570 | 580 | if detail_level > 0 and info['source'] is not None: |
|
571 | 581 | displayfields.append(("Source", |
|
572 | 582 | self.format(cast_unicode(info['source'])))) |
|
573 | 583 | elif info['docstring'] is not None: |
|
574 | 584 | displayfields.append(("Docstring", info["docstring"])) |
|
575 | 585 | |
|
576 | 586 | # Constructor info for classes |
|
577 | 587 | if info['isclass']: |
|
578 | 588 | if info['init_definition'] or info['init_docstring']: |
|
579 | 589 | displayfields.append(("Constructor information", "")) |
|
580 | 590 | if info['init_definition'] is not None: |
|
581 | 591 | displayfields.append((" Definition", |
|
582 | 592 | info['init_definition'].rstrip())) |
|
583 | 593 | if info['init_docstring'] is not None: |
|
584 | 594 | displayfields.append((" Docstring", |
|
585 | 595 | indent(info['init_docstring']))) |
|
586 | 596 | |
|
587 | 597 | # Info for objects: |
|
588 | 598 | else: |
|
589 | 599 | add_fields(self.pinfo_fields_obj) |
|
590 | 600 | |
|
591 | 601 | # Finally send to printer/pager: |
|
592 | 602 | if displayfields: |
|
593 | 603 | page.page(self._format_fields(displayfields)) |
|
594 | 604 | |
|
595 | 605 | def info(self, obj, oname='', formatter=None, info=None, detail_level=0): |
|
596 | 606 | """Compute a dict with detailed information about an object. |
|
597 | 607 | |
|
598 | 608 | Optional arguments: |
|
599 | 609 | |
|
600 | 610 | - oname: name of the variable pointing to the object. |
|
601 | 611 | |
|
602 | 612 | - formatter: special formatter for docstrings (see pdoc) |
|
603 | 613 | |
|
604 | 614 | - info: a structure with some information fields which may have been |
|
605 | 615 | precomputed already. |
|
606 | 616 | |
|
607 | 617 | - detail_level: if set to 1, more information is given. |
|
608 | 618 | """ |
|
609 | 619 | |
|
610 | 620 | obj_type = type(obj) |
|
611 | 621 | |
|
612 | 622 | header = self.__head |
|
613 | 623 | if info is None: |
|
614 | 624 | ismagic = 0 |
|
615 | 625 | isalias = 0 |
|
616 | 626 | ospace = '' |
|
617 | 627 | else: |
|
618 | 628 | ismagic = info.ismagic |
|
619 | 629 | isalias = info.isalias |
|
620 | 630 | ospace = info.namespace |
|
621 | 631 | |
|
622 | 632 | # Get docstring, special-casing aliases: |
|
623 | 633 | if isalias: |
|
624 | 634 | if not callable(obj): |
|
625 | 635 | try: |
|
626 | 636 | ds = "Alias to the system command:\n %s" % obj[1] |
|
627 | 637 | except: |
|
628 | 638 | ds = "Alias: " + str(obj) |
|
629 | 639 | else: |
|
630 | 640 | ds = "Alias to " + str(obj) |
|
631 | 641 | if obj.__doc__: |
|
632 | 642 | ds += "\nDocstring:\n" + obj.__doc__ |
|
633 | 643 | else: |
|
634 | 644 | ds = getdoc(obj) |
|
635 | 645 | if ds is None: |
|
636 | 646 | ds = '<no docstring>' |
|
637 | 647 | if formatter is not None: |
|
638 | 648 | ds = formatter(ds) |
|
639 | 649 | |
|
640 | 650 | # store output in a dict, we initialize it here and fill it as we go |
|
641 | 651 | out = dict(name=oname, found=True, isalias=isalias, ismagic=ismagic) |
|
642 | 652 | |
|
643 | 653 | string_max = 200 # max size of strings to show (snipped if longer) |
|
644 | 654 | shalf = int((string_max -5)/2) |
|
645 | 655 | |
|
646 | 656 | if ismagic: |
|
647 | 657 | obj_type_name = 'Magic function' |
|
648 | 658 | elif isalias: |
|
649 | 659 | obj_type_name = 'System alias' |
|
650 | 660 | else: |
|
651 | 661 | obj_type_name = obj_type.__name__ |
|
652 | 662 | out['type_name'] = obj_type_name |
|
653 | 663 | |
|
654 | 664 | try: |
|
655 | 665 | bclass = obj.__class__ |
|
656 | 666 | out['base_class'] = str(bclass) |
|
657 | 667 | except: pass |
|
658 | 668 | |
|
659 | 669 | # String form, but snip if too long in ? form (full in ??) |
|
660 | 670 | if detail_level >= self.str_detail_level: |
|
661 | 671 | try: |
|
662 | 672 | ostr = str(obj) |
|
663 | 673 | str_head = 'string_form' |
|
664 | 674 | if not detail_level and len(ostr)>string_max: |
|
665 | 675 | ostr = ostr[:shalf] + ' <...> ' + ostr[-shalf:] |
|
666 | 676 | ostr = ("\n" + " " * len(str_head.expandtabs())).\ |
|
667 | 677 | join(q.strip() for q in ostr.split("\n")) |
|
668 | 678 | out[str_head] = ostr |
|
669 | 679 | except: |
|
670 | 680 | pass |
|
671 | 681 | |
|
672 | 682 | if ospace: |
|
673 | 683 | out['namespace'] = ospace |
|
674 | 684 | |
|
675 | 685 | # Length (for strings and lists) |
|
676 | 686 | try: |
|
677 | 687 | out['length'] = str(len(obj)) |
|
678 | 688 | except: pass |
|
679 | 689 | |
|
680 | 690 | # Filename where object was defined |
|
681 | 691 | binary_file = False |
|
682 | 692 | fname = find_file(obj) |
|
683 | 693 | if fname is None: |
|
684 | 694 | # if anything goes wrong, we don't want to show source, so it's as |
|
685 | 695 | # if the file was binary |
|
686 | 696 | binary_file = True |
|
687 | 697 | else: |
|
688 | 698 | if fname.endswith(('.so', '.dll', '.pyd')): |
|
689 | 699 | binary_file = True |
|
690 | 700 | elif fname.endswith('<string>'): |
|
691 | 701 | fname = 'Dynamically generated function. No source code available.' |
|
692 | 702 | out['file'] = fname |
|
693 | 703 | |
|
694 | 704 | # reconstruct the function definition and print it: |
|
695 | 705 | defln = self._getdef(obj, oname) |
|
696 | 706 | if defln: |
|
697 | 707 | out['definition'] = self.format(defln) |
|
698 | 708 | |
|
699 | 709 | # Docstrings only in detail 0 mode, since source contains them (we |
|
700 | 710 | # avoid repetitions). If source fails, we add them back, see below. |
|
701 | 711 | if ds and detail_level == 0: |
|
702 | 712 | out['docstring'] = ds |
|
703 | 713 | |
|
704 | 714 | # Original source code for any callable |
|
705 | 715 | if detail_level: |
|
706 | 716 | # Flush the source cache because inspect can return out-of-date |
|
707 | 717 | # source |
|
708 | 718 | linecache.checkcache() |
|
709 | 719 | source = None |
|
710 | 720 | try: |
|
711 | 721 | try: |
|
712 | 722 | source = getsource(obj, binary_file) |
|
713 | 723 | except TypeError: |
|
714 | 724 | if hasattr(obj, '__class__'): |
|
715 | 725 | source = getsource(obj.__class__, binary_file) |
|
716 | 726 | if source is not None: |
|
717 | 727 | out['source'] = source.rstrip() |
|
718 | 728 | except Exception: |
|
719 | 729 | pass |
|
720 | 730 | |
|
721 | 731 | if ds and source is None: |
|
722 | 732 | out['docstring'] = ds |
|
723 | 733 | |
|
724 | 734 | |
|
725 | 735 | # Constructor docstring for classes |
|
726 | 736 | if inspect.isclass(obj): |
|
727 | 737 | out['isclass'] = True |
|
728 | 738 | # reconstruct the function definition and print it: |
|
729 | 739 | try: |
|
730 | 740 | obj_init = obj.__init__ |
|
731 | 741 | except AttributeError: |
|
732 | 742 | init_def = init_ds = None |
|
733 | 743 | else: |
|
734 | 744 | init_def = self._getdef(obj_init,oname) |
|
735 | 745 | init_ds = getdoc(obj_init) |
|
736 | 746 | # Skip Python's auto-generated docstrings |
|
737 | 747 | if init_ds and \ |
|
738 | 748 | init_ds.startswith('x.__init__(...) initializes'): |
|
739 | 749 | init_ds = None |
|
740 | 750 | |
|
741 | 751 | if init_def or init_ds: |
|
742 | 752 | if init_def: |
|
743 | 753 | out['init_definition'] = self.format(init_def) |
|
744 | 754 | if init_ds: |
|
745 | 755 | out['init_docstring'] = init_ds |
|
746 | 756 | |
|
747 | 757 | # and class docstring for instances: |
|
748 | 758 | else: |
|
749 | 759 | # First, check whether the instance docstring is identical to the |
|
750 | 760 | # class one, and print it separately if they don't coincide. In |
|
751 | 761 | # most cases they will, but it's nice to print all the info for |
|
752 | 762 | # objects which use instance-customized docstrings. |
|
753 | 763 | if ds: |
|
754 | 764 | try: |
|
755 | 765 | cls = getattr(obj,'__class__') |
|
756 | 766 | except: |
|
757 | 767 | class_ds = None |
|
758 | 768 | else: |
|
759 | 769 | class_ds = getdoc(cls) |
|
760 | 770 | # Skip Python's auto-generated docstrings |
|
761 | 771 | if class_ds and \ |
|
762 | 772 | (class_ds.startswith('function(code, globals[,') or \ |
|
763 | 773 | class_ds.startswith('instancemethod(function, instance,') or \ |
|
764 | 774 | class_ds.startswith('module(name[,') ): |
|
765 | 775 | class_ds = None |
|
766 | 776 | if class_ds and ds != class_ds: |
|
767 | 777 | out['class_docstring'] = class_ds |
|
768 | 778 | |
|
769 | 779 | # Next, try to show constructor docstrings |
|
770 | 780 | try: |
|
771 | 781 | init_ds = getdoc(obj.__init__) |
|
772 | 782 | # Skip Python's auto-generated docstrings |
|
773 | 783 | if init_ds and \ |
|
774 | 784 | init_ds.startswith('x.__init__(...) initializes'): |
|
775 | 785 | init_ds = None |
|
776 | 786 | except AttributeError: |
|
777 | 787 | init_ds = None |
|
778 | 788 | if init_ds: |
|
779 | 789 | out['init_docstring'] = init_ds |
|
780 | 790 | |
|
781 | 791 | # Call form docstring for callable instances |
|
782 | if hasattr(obj, '__call__'): | |
|
792 | if safe_hasattr(obj, '__call__'): | |
|
783 | 793 | call_def = self._getdef(obj.__call__, oname) |
|
784 | 794 | if call_def is not None: |
|
785 | 795 | out['call_def'] = self.format(call_def) |
|
786 | 796 | call_ds = getdoc(obj.__call__) |
|
787 | 797 | # Skip Python's auto-generated docstrings |
|
788 | 798 | if call_ds and call_ds.startswith('x.__call__(...) <==> x(...)'): |
|
789 | 799 | call_ds = None |
|
790 | 800 | if call_ds: |
|
791 | 801 | out['call_docstring'] = call_ds |
|
792 | 802 | |
|
793 | 803 | # Compute the object's argspec as a callable. The key is to decide |
|
794 | 804 | # whether to pull it from the object itself, from its __init__ or |
|
795 | 805 | # from its __call__ method. |
|
796 | 806 | |
|
797 | 807 | if inspect.isclass(obj): |
|
798 | 808 | # Old-style classes need not have an __init__ |
|
799 | 809 | callable_obj = getattr(obj, "__init__", None) |
|
800 | 810 | elif callable(obj): |
|
801 | 811 | callable_obj = obj |
|
802 | 812 | else: |
|
803 | 813 | callable_obj = None |
|
804 | 814 | |
|
805 | 815 | if callable_obj: |
|
806 | 816 | try: |
|
807 | 817 | args, varargs, varkw, defaults = getargspec(callable_obj) |
|
808 | 818 | except (TypeError, AttributeError): |
|
809 | 819 | # For extensions/builtins we can't retrieve the argspec |
|
810 | 820 | pass |
|
811 | 821 | else: |
|
812 | 822 | out['argspec'] = dict(args=args, varargs=varargs, |
|
813 | 823 | varkw=varkw, defaults=defaults) |
|
814 | 824 | |
|
815 | 825 | return object_info(**out) |
|
816 | 826 | |
|
817 | 827 | |
|
818 | 828 | def psearch(self,pattern,ns_table,ns_search=[], |
|
819 | 829 | ignore_case=False,show_all=False): |
|
820 | 830 | """Search namespaces with wildcards for objects. |
|
821 | 831 | |
|
822 | 832 | Arguments: |
|
823 | 833 | |
|
824 | 834 | - pattern: string containing shell-like wildcards to use in namespace |
|
825 | 835 | searches and optionally a type specification to narrow the search to |
|
826 | 836 | objects of that type. |
|
827 | 837 | |
|
828 | 838 | - ns_table: dict of name->namespaces for search. |
|
829 | 839 | |
|
830 | 840 | Optional arguments: |
|
831 | 841 | |
|
832 | 842 | - ns_search: list of namespace names to include in search. |
|
833 | 843 | |
|
834 | 844 | - ignore_case(False): make the search case-insensitive. |
|
835 | 845 | |
|
836 | 846 | - show_all(False): show all names, including those starting with |
|
837 | 847 | underscores. |
|
838 | 848 | """ |
|
839 | 849 | #print 'ps pattern:<%r>' % pattern # dbg |
|
840 | 850 | |
|
841 | 851 | # defaults |
|
842 | 852 | type_pattern = 'all' |
|
843 | 853 | filter = '' |
|
844 | 854 | |
|
845 | 855 | cmds = pattern.split() |
|
846 | 856 | len_cmds = len(cmds) |
|
847 | 857 | if len_cmds == 1: |
|
848 | 858 | # Only filter pattern given |
|
849 | 859 | filter = cmds[0] |
|
850 | 860 | elif len_cmds == 2: |
|
851 | 861 | # Both filter and type specified |
|
852 | 862 | filter,type_pattern = cmds |
|
853 | 863 | else: |
|
854 | 864 | raise ValueError('invalid argument string for psearch: <%s>' % |
|
855 | 865 | pattern) |
|
856 | 866 | |
|
857 | 867 | # filter search namespaces |
|
858 | 868 | for name in ns_search: |
|
859 | 869 | if name not in ns_table: |
|
860 | 870 | raise ValueError('invalid namespace <%s>. Valid names: %s' % |
|
861 | 871 | (name,ns_table.keys())) |
|
862 | 872 | |
|
863 | 873 | #print 'type_pattern:',type_pattern # dbg |
|
864 | 874 | search_result, namespaces_seen = set(), set() |
|
865 | 875 | for ns_name in ns_search: |
|
866 | 876 | ns = ns_table[ns_name] |
|
867 | 877 | # Normally, locals and globals are the same, so we just check one. |
|
868 | 878 | if id(ns) in namespaces_seen: |
|
869 | 879 | continue |
|
870 | 880 | namespaces_seen.add(id(ns)) |
|
871 | 881 | tmp_res = list_namespace(ns, type_pattern, filter, |
|
872 | 882 | ignore_case=ignore_case, show_all=show_all) |
|
873 | 883 | search_result.update(tmp_res) |
|
874 | 884 | |
|
875 | 885 | page.page('\n'.join(sorted(search_result))) |
@@ -1,290 +1,299 b'' | |||
|
1 | 1 | """Tests for the object inspection functionality. |
|
2 | 2 | """ |
|
3 | 3 | #----------------------------------------------------------------------------- |
|
4 | 4 | # Copyright (C) 2010-2011 The IPython Development Team. |
|
5 | 5 | # |
|
6 | 6 | # Distributed under the terms of the BSD License. |
|
7 | 7 | # |
|
8 | 8 | # The full license is in the file COPYING.txt, distributed with this software. |
|
9 | 9 | #----------------------------------------------------------------------------- |
|
10 | 10 | |
|
11 | 11 | #----------------------------------------------------------------------------- |
|
12 | 12 | # Imports |
|
13 | 13 | #----------------------------------------------------------------------------- |
|
14 | 14 | from __future__ import print_function |
|
15 | 15 | |
|
16 | 16 | # Stdlib imports |
|
17 | 17 | import os |
|
18 | 18 | import re |
|
19 | 19 | |
|
20 | 20 | # Third-party imports |
|
21 | 21 | import nose.tools as nt |
|
22 | 22 | |
|
23 | 23 | # Our own imports |
|
24 | 24 | from .. import oinspect |
|
25 | 25 | from IPython.core.magic import (Magics, magics_class, line_magic, |
|
26 | 26 | cell_magic, line_cell_magic, |
|
27 | 27 | register_line_magic, register_cell_magic, |
|
28 | 28 | register_line_cell_magic) |
|
29 | 29 | from IPython.external.decorator import decorator |
|
30 | 30 | from IPython.utils import py3compat |
|
31 | 31 | |
|
32 | 32 | |
|
33 | 33 | #----------------------------------------------------------------------------- |
|
34 | 34 | # Globals and constants |
|
35 | 35 | #----------------------------------------------------------------------------- |
|
36 | 36 | |
|
37 | 37 | inspector = oinspect.Inspector() |
|
38 | 38 | ip = get_ipython() |
|
39 | 39 | |
|
40 | 40 | #----------------------------------------------------------------------------- |
|
41 | 41 | # Local utilities |
|
42 | 42 | #----------------------------------------------------------------------------- |
|
43 | 43 | |
|
44 | 44 | # WARNING: since this test checks the line number where a function is |
|
45 | 45 | # defined, if any code is inserted above, the following line will need to be |
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46 | 46 | # updated. Do NOT insert any whitespace between the next line and the function |
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47 | 47 | # definition below. |
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48 | 48 | THIS_LINE_NUMBER = 48 # Put here the actual number of this line |
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49 | 49 | def test_find_source_lines(): |
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50 | 50 | nt.assert_equal(oinspect.find_source_lines(test_find_source_lines), |
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51 | 51 | THIS_LINE_NUMBER+1) |
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52 | 52 | |
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53 | 53 | |
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54 | 54 | # A couple of utilities to ensure these tests work the same from a source or a |
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55 | 55 | # binary install |
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56 | 56 | def pyfile(fname): |
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57 | 57 | return os.path.normcase(re.sub('.py[co]$', '.py', fname)) |
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58 | 58 | |
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59 | 59 | |
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60 | 60 | def match_pyfiles(f1, f2): |
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61 | 61 | nt.assert_equal(pyfile(f1), pyfile(f2)) |
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62 | 62 | |
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63 | 63 | |
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64 | 64 | def test_find_file(): |
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65 | 65 | match_pyfiles(oinspect.find_file(test_find_file), os.path.abspath(__file__)) |
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66 | 66 | |
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67 | 67 | |
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68 | 68 | def test_find_file_decorated1(): |
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69 | 69 | |
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70 | 70 | @decorator |
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71 | 71 | def noop1(f): |
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72 | 72 | def wrapper(): |
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73 | 73 | return f(*a, **kw) |
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74 | 74 | return wrapper |
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75 | 75 | |
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76 | 76 | @noop1 |
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77 | 77 | def f(x): |
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78 | 78 | "My docstring" |
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79 | 79 | |
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80 | 80 | match_pyfiles(oinspect.find_file(f), os.path.abspath(__file__)) |
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81 | 81 | nt.assert_equal(f.__doc__, "My docstring") |
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82 | 82 | |
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83 | 83 | |
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84 | 84 | def test_find_file_decorated2(): |
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85 | 85 | |
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86 | 86 | @decorator |
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87 | 87 | def noop2(f, *a, **kw): |
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88 | 88 | return f(*a, **kw) |
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89 | 89 | |
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90 | 90 | @noop2 |
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91 | 91 | def f(x): |
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92 | 92 | "My docstring 2" |
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93 | 93 | |
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94 | 94 | match_pyfiles(oinspect.find_file(f), os.path.abspath(__file__)) |
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95 | 95 | nt.assert_equal(f.__doc__, "My docstring 2") |
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96 | 96 | |
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97 | 97 | |
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98 | 98 | def test_find_file_magic(): |
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99 | 99 | run = ip.find_line_magic('run') |
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100 | 100 | nt.assert_not_equal(oinspect.find_file(run), None) |
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101 | 101 | |
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102 | 102 | |
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103 | 103 | # A few generic objects we can then inspect in the tests below |
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104 | 104 | |
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105 | 105 | class Call(object): |
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106 | 106 | """This is the class docstring.""" |
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107 | 107 | |
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108 | 108 | def __init__(self, x, y=1): |
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109 | 109 | """This is the constructor docstring.""" |
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110 | 110 | |
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111 | 111 | def __call__(self, *a, **kw): |
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112 | 112 | """This is the call docstring.""" |
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113 | 113 | |
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114 | 114 | def method(self, x, z=2): |
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115 | 115 | """Some method's docstring""" |
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116 | 116 | |
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117 | 117 | |
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118 | 118 | class OldStyle: |
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119 | 119 | """An old-style class for testing.""" |
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120 | 120 | pass |
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121 | 121 | |
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122 | 122 | |
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123 | 123 | def f(x, y=2, *a, **kw): |
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124 | 124 | """A simple function.""" |
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125 | 125 | |
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126 | 126 | |
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127 | 127 | def g(y, z=3, *a, **kw): |
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128 | 128 | pass # no docstring |
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129 | 129 | |
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130 | 130 | |
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131 | 131 | @register_line_magic |
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132 | 132 | def lmagic(line): |
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133 | 133 | "A line magic" |
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134 | 134 | |
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135 | 135 | |
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136 | 136 | @register_cell_magic |
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137 | 137 | def cmagic(line, cell): |
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138 | 138 | "A cell magic" |
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139 | 139 | |
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140 | 140 | |
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141 | 141 | @register_line_cell_magic |
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142 | 142 | def lcmagic(line, cell=None): |
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143 | 143 | "A line/cell magic" |
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144 | 144 | |
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145 | 145 | |
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146 | 146 | @magics_class |
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147 | 147 | class SimpleMagics(Magics): |
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148 | 148 | @line_magic |
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149 | 149 | def Clmagic(self, cline): |
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150 | 150 | "A class-based line magic" |
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151 | 151 | |
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152 | 152 | @cell_magic |
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153 | 153 | def Ccmagic(self, cline, ccell): |
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154 | 154 | "A class-based cell magic" |
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155 | 155 | |
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156 | 156 | @line_cell_magic |
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157 | 157 | def Clcmagic(self, cline, ccell=None): |
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158 | 158 | "A class-based line/cell magic" |
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159 | 159 | |
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160 | 160 | |
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161 | class Awkward(object): | |
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162 | def __getattr__(self, name): | |
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163 | raise Exception(name) | |
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164 | ||
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165 | ||
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161 | 166 | def check_calltip(obj, name, call, docstring): |
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162 | 167 | """Generic check pattern all calltip tests will use""" |
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163 | 168 | info = inspector.info(obj, name) |
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164 | 169 | call_line, ds = oinspect.call_tip(info) |
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165 | 170 | nt.assert_equal(call_line, call) |
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166 | 171 | nt.assert_equal(ds, docstring) |
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167 | 172 | |
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168 | 173 | #----------------------------------------------------------------------------- |
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169 | 174 | # Tests |
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170 | 175 | #----------------------------------------------------------------------------- |
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171 | 176 | |
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172 | 177 | def test_calltip_class(): |
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173 | 178 | check_calltip(Call, 'Call', 'Call(x, y=1)', Call.__init__.__doc__) |
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174 | 179 | |
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175 | 180 | |
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176 | 181 | def test_calltip_instance(): |
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177 | 182 | c = Call(1) |
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178 | 183 | check_calltip(c, 'c', 'c(*a, **kw)', c.__call__.__doc__) |
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179 | 184 | |
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180 | 185 | |
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181 | 186 | def test_calltip_method(): |
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182 | 187 | c = Call(1) |
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183 | 188 | check_calltip(c.method, 'c.method', 'c.method(x, z=2)', c.method.__doc__) |
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184 | 189 | |
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185 | 190 | |
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186 | 191 | def test_calltip_function(): |
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187 | 192 | check_calltip(f, 'f', 'f(x, y=2, *a, **kw)', f.__doc__) |
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188 | 193 | |
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189 | 194 | |
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190 | 195 | def test_calltip_function2(): |
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191 | 196 | check_calltip(g, 'g', 'g(y, z=3, *a, **kw)', '<no docstring>') |
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192 | 197 | |
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193 | 198 | |
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194 | 199 | def test_calltip_builtin(): |
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195 | 200 | check_calltip(sum, 'sum', None, sum.__doc__) |
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196 | 201 | |
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197 | 202 | |
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198 | 203 | def test_calltip_line_magic(): |
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199 | 204 | check_calltip(lmagic, 'lmagic', 'lmagic(line)', "A line magic") |
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200 | 205 | |
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201 | 206 | |
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202 | 207 | def test_calltip_cell_magic(): |
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203 | 208 | check_calltip(cmagic, 'cmagic', 'cmagic(line, cell)', "A cell magic") |
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204 | 209 | |
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205 | 210 | |
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206 | 211 | def test_calltip_line_magic(): |
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207 | 212 | check_calltip(lcmagic, 'lcmagic', 'lcmagic(line, cell=None)', |
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208 | 213 | "A line/cell magic") |
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209 | 214 | |
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210 | 215 | |
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211 | 216 | def test_class_magics(): |
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212 | 217 | cm = SimpleMagics(ip) |
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213 | 218 | ip.register_magics(cm) |
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214 | 219 | check_calltip(cm.Clmagic, 'Clmagic', 'Clmagic(cline)', |
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215 | 220 | "A class-based line magic") |
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216 | 221 | check_calltip(cm.Ccmagic, 'Ccmagic', 'Ccmagic(cline, ccell)', |
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217 | 222 | "A class-based cell magic") |
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218 | 223 | check_calltip(cm.Clcmagic, 'Clcmagic', 'Clcmagic(cline, ccell=None)', |
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219 | 224 | "A class-based line/cell magic") |
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220 | 225 | |
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221 | 226 | |
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222 | 227 | def test_info(): |
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223 | 228 | "Check that Inspector.info fills out various fields as expected." |
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224 | 229 | i = inspector.info(Call, oname='Call') |
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225 | 230 | nt.assert_equal(i['type_name'], 'type') |
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226 | 231 | expted_class = str(type(type)) # <class 'type'> (Python 3) or <type 'type'> |
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227 | 232 | nt.assert_equal(i['base_class'], expted_class) |
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228 | 233 | nt.assert_equal(i['string_form'], "<class 'IPython.core.tests.test_oinspect.Call'>") |
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229 | 234 | fname = __file__ |
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230 | 235 | if fname.endswith(".pyc"): |
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231 | 236 | fname = fname[:-1] |
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232 | 237 | # case-insensitive comparison needed on some filesystems |
|
233 | 238 | # e.g. Windows: |
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234 | 239 | nt.assert_equal(i['file'].lower(), fname.lower()) |
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235 | 240 | nt.assert_equal(i['definition'], 'Call(self, *a, **kw)\n') |
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236 | 241 | nt.assert_equal(i['docstring'], Call.__doc__) |
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237 | 242 | nt.assert_equal(i['source'], None) |
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238 | 243 | nt.assert_true(i['isclass']) |
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239 | 244 | nt.assert_equal(i['init_definition'], "Call(self, x, y=1)\n") |
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240 | 245 | nt.assert_equal(i['init_docstring'], Call.__init__.__doc__) |
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241 | 246 | |
|
242 | 247 | i = inspector.info(Call, detail_level=1) |
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243 | 248 | nt.assert_not_equal(i['source'], None) |
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244 | 249 | nt.assert_equal(i['docstring'], None) |
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245 | 250 | |
|
246 | 251 | c = Call(1) |
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247 | 252 | c.__doc__ = "Modified instance docstring" |
|
248 | 253 | i = inspector.info(c) |
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249 | 254 | nt.assert_equal(i['type_name'], 'Call') |
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250 | 255 | nt.assert_equal(i['docstring'], "Modified instance docstring") |
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251 | 256 | nt.assert_equal(i['class_docstring'], Call.__doc__) |
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252 | 257 | nt.assert_equal(i['init_docstring'], Call.__init__.__doc__) |
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253 | 258 | nt.assert_equal(i['call_docstring'], c.__call__.__doc__) |
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254 | 259 | |
|
255 | 260 | # Test old-style classes, which for example may not have an __init__ method. |
|
256 | 261 | if not py3compat.PY3: |
|
257 | 262 | i = inspector.info(OldStyle) |
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258 | 263 | nt.assert_equal(i['type_name'], 'classobj') |
|
259 | 264 | |
|
260 | 265 | i = inspector.info(OldStyle()) |
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261 | 266 | nt.assert_equal(i['type_name'], 'instance') |
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262 | 267 | nt.assert_equal(i['docstring'], OldStyle.__doc__) |
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263 | 268 | |
|
269 | def test_info_awkward(): | |
|
270 | # Just test that this doesn't throw an error. | |
|
271 | i = inspector.info(Awkward()) | |
|
272 | ||
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264 | 273 | def test_getdoc(): |
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265 | 274 | class A(object): |
|
266 | 275 | """standard docstring""" |
|
267 | 276 | pass |
|
268 | 277 | |
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269 | 278 | class B(object): |
|
270 | 279 | """standard docstring""" |
|
271 | 280 | def getdoc(self): |
|
272 | 281 | return "custom docstring" |
|
273 | 282 | |
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274 | 283 | class C(object): |
|
275 | 284 | """standard docstring""" |
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276 | 285 | def getdoc(self): |
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277 | 286 | return None |
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278 | 287 | |
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279 | 288 | a = A() |
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280 | 289 | b = B() |
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281 | 290 | c = C() |
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282 | 291 | |
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283 | 292 | nt.assert_equal(oinspect.getdoc(a), "standard docstring") |
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284 | 293 | nt.assert_equal(oinspect.getdoc(b), "custom docstring") |
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285 | 294 | nt.assert_equal(oinspect.getdoc(c), "standard docstring") |
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286 | 295 | |
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287 | 296 | def test_pdef(): |
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288 | 297 | # See gh-1914 |
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289 | 298 | def foo(): pass |
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290 | 299 | inspector.pdef(foo, 'foo') |
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