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