Merged revisions 63829-63831,63858,63865,63879,63882,63948,63970-63972,63976,63989,64014-64015,64021-64022,64063-64065,64067 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r63829 | mark.summerfield | 2008-05-31 15:05:34 +0200 (Sat, 31 May 2008) | 4 lines
Added a note to [] that special forms & special chars lose their meaning
and backrefs can't be used inside []
........
r63830 | georg.brandl | 2008-05-31 16:40:09 +0200 (Sat, 31 May 2008) | 2 lines
#3010: clarification about stdin/use_rawinput.
........
r63831 | georg.brandl | 2008-05-31 16:45:55 +0200 (Sat, 31 May 2008) | 2 lines
#3005: add explaining sentence to easydialogs docs.
........
r63858 | georg.brandl | 2008-06-01 18:41:31 +0200 (Sun, 01 Jun 2008) | 2 lines
Add plain text make target.
........
r63865 | georg.brandl | 2008-06-01 21:24:36 +0200 (Sun, 01 Jun 2008) | 2 lines
Spaces vs. tabs.
........
r63879 | gregory.p.smith | 2008-06-02 00:57:47 +0200 (Mon, 02 Jun 2008) | 3 lines
Make the _H #define's match the header file names. Fix comments to
mention the correct type names.
........
r63882 | gregory.p.smith | 2008-06-02 01:48:47 +0200 (Mon, 02 Jun 2008) | 3 lines
Adds a Thread.getIdent() method to provide the _get_ident() value for
any given threading.Thread object. feature request issue 2871.
........
r63948 | alexandre.vassalotti | 2008-06-04 22:41:44 +0200 (Wed, 04 Jun 2008) | 2 lines
Fixed complex.__getnewargs__() to not emit another complex object.
........
r63970 | andrew.kuchling | 2008-06-06 01:33:54 +0200 (Fri, 06 Jun 2008) | 1 line
Document 'utc' parameter
........
r63971 | andrew.kuchling | 2008-06-06 01:35:31 +0200 (Fri, 06 Jun 2008) | 1 line
Add various items
........
r63972 | andrew.kuchling | 2008-06-06 01:35:48 +0200 (Fri, 06 Jun 2008) | 1 line
Grammar fix
........
r63976 | georg.brandl | 2008-06-06 09:34:50 +0200 (Fri, 06 Jun 2008) | 2 lines
Markup fix.
........
r63989 | thomas.heller | 2008-06-06 20:42:11 +0200 (Fri, 06 Jun 2008) | 2 lines
Add a reminder for the maintainer of whatsnew.
........
r64014 | georg.brandl | 2008-06-07 17:59:10 +0200 (Sat, 07 Jun 2008) | 3 lines
Factor out docstring dedenting from inspect.getdoc() into inspect.cleandoc()
to ease standalone use of the algorithm.
........
r64015 | georg.brandl | 2008-06-07 18:04:01 +0200 (Sat, 07 Jun 2008) | 2 lines
Revert unwanted changes.
........
r64021 | georg.brandl | 2008-06-07 20:16:12 +0200 (Sat, 07 Jun 2008) | 2 lines
X-ref to numbers module.
........
r64022 | georg.brandl | 2008-06-07 20:17:37 +0200 (Sat, 07 Jun 2008) | 3 lines
Document the "st" API, to avoid confusion with the "new" AST.
Add a note about using the new AST module.
........
r64063 | martin.v.loewis | 2008-06-10 07:03:35 +0200 (Tue, 10 Jun 2008) | 2 lines
Add Gregor Lingl.
........
r64064 | georg.brandl | 2008-06-10 09:45:28 +0200 (Tue, 10 Jun 2008) | 2 lines
Add the "ast" module, containing helpers to ease use of the "_ast" classes.
........
r64065 | raymond.hettinger | 2008-06-10 09:57:15 +0200 (Tue, 10 Jun 2008) | 1 line
Add Arnaud for his efforts on multi-arg set operations.
........
r64067 | georg.brandl | 2008-06-10 14:46:39 +0200 (Tue, 10 Jun 2008) | 2 lines
#2536: fix itertools.permutations and itertools.combinations docstrings.
........
2008-06-11 00:37:50 +08:00
|
|
|
# -*- coding: utf-8 -*-
|
|
|
|
"""
|
|
|
|
ast
|
|
|
|
~~~
|
|
|
|
|
|
|
|
The `ast` module helps Python applications to process trees of the Python
|
|
|
|
abstract syntax grammar. The abstract syntax itself might change with
|
|
|
|
each Python release; this module helps to find out programmatically what
|
|
|
|
the current grammar looks like and allows modifications of it.
|
|
|
|
|
|
|
|
An abstract syntax tree can be generated by passing `ast.PyCF_ONLY_AST` as
|
|
|
|
a flag to the `compile()` builtin function or by using the `parse()`
|
|
|
|
function from this module. The result will be a tree of objects whose
|
|
|
|
classes all inherit from `ast.AST`.
|
|
|
|
|
|
|
|
A modified abstract syntax tree can be compiled into a Python code object
|
|
|
|
using the built-in `compile()` function.
|
|
|
|
|
|
|
|
Additionally various helper functions are provided that make working with
|
|
|
|
the trees simpler. The main intention of the helper functions and this
|
|
|
|
module in general is to provide an easy to use interface for libraries
|
|
|
|
that work tightly with the python syntax (template engines for example).
|
|
|
|
|
|
|
|
|
|
|
|
:copyright: Copyright 2008 by Armin Ronacher.
|
|
|
|
:license: Python License.
|
|
|
|
"""
|
|
|
|
from _ast import *
|
Merged revisions 66974,66977,66984,66989,66992,66994-66996,66998-67000,67007,67015 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r66974 | benjamin.peterson | 2008-10-19 08:59:01 -0500 (Sun, 19 Oct 2008) | 1 line
fix compiler warning
........
r66977 | benjamin.peterson | 2008-10-19 14:39:16 -0500 (Sun, 19 Oct 2008) | 1 line
mention -n
........
r66984 | armin.ronacher | 2008-10-20 16:29:08 -0500 (Mon, 20 Oct 2008) | 3 lines
Fixed #4062, added import for _ast.__version__ to ast to match the documented behavior.
........
r66989 | matthias.klose | 2008-10-21 04:12:25 -0500 (Tue, 21 Oct 2008) | 2 lines
- install versioned manpage
........
r66992 | benjamin.peterson | 2008-10-21 15:51:13 -0500 (Tue, 21 Oct 2008) | 1 line
make sure to call iteritems()
........
r66994 | amaury.forgeotdarc | 2008-10-21 17:01:38 -0500 (Tue, 21 Oct 2008) | 6 lines
#4157 move two test functions out of platform.py.
Turn them into unit tests, and correct an obvious typo:
(("a", "b") ("c", "d") ("e", "f"))
compiles even with the missing commas, but does not execute very well...
........
r66995 | benjamin.peterson | 2008-10-21 17:18:29 -0500 (Tue, 21 Oct 2008) | 1 line
return ArgInfo from inspect.getargvalues #4092
........
r66996 | benjamin.peterson | 2008-10-21 17:20:31 -0500 (Tue, 21 Oct 2008) | 1 line
add NEWs note for last change
........
r66998 | benjamin.peterson | 2008-10-22 15:57:43 -0500 (Wed, 22 Oct 2008) | 1 line
fix a few typos
........
r66999 | benjamin.peterson | 2008-10-22 16:05:30 -0500 (Wed, 22 Oct 2008) | 1 line
and another typo...
........
r67000 | benjamin.peterson | 2008-10-22 16:16:34 -0500 (Wed, 22 Oct 2008) | 1 line
fix #4150: pdb's up command didn't work for generators in post-mortem
........
r67007 | benjamin.peterson | 2008-10-23 16:43:48 -0500 (Thu, 23 Oct 2008) | 1 line
only nonempty __slots__ don't work
........
r67015 | georg.brandl | 2008-10-25 02:00:52 -0500 (Sat, 25 Oct 2008) | 2 lines
Typo fix.
........
2008-10-25 23:49:17 +08:00
|
|
|
from _ast import __version__
|
Merged revisions 63829-63831,63858,63865,63879,63882,63948,63970-63972,63976,63989,64014-64015,64021-64022,64063-64065,64067 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r63829 | mark.summerfield | 2008-05-31 15:05:34 +0200 (Sat, 31 May 2008) | 4 lines
Added a note to [] that special forms & special chars lose their meaning
and backrefs can't be used inside []
........
r63830 | georg.brandl | 2008-05-31 16:40:09 +0200 (Sat, 31 May 2008) | 2 lines
#3010: clarification about stdin/use_rawinput.
........
r63831 | georg.brandl | 2008-05-31 16:45:55 +0200 (Sat, 31 May 2008) | 2 lines
#3005: add explaining sentence to easydialogs docs.
........
r63858 | georg.brandl | 2008-06-01 18:41:31 +0200 (Sun, 01 Jun 2008) | 2 lines
Add plain text make target.
........
r63865 | georg.brandl | 2008-06-01 21:24:36 +0200 (Sun, 01 Jun 2008) | 2 lines
Spaces vs. tabs.
........
r63879 | gregory.p.smith | 2008-06-02 00:57:47 +0200 (Mon, 02 Jun 2008) | 3 lines
Make the _H #define's match the header file names. Fix comments to
mention the correct type names.
........
r63882 | gregory.p.smith | 2008-06-02 01:48:47 +0200 (Mon, 02 Jun 2008) | 3 lines
Adds a Thread.getIdent() method to provide the _get_ident() value for
any given threading.Thread object. feature request issue 2871.
........
r63948 | alexandre.vassalotti | 2008-06-04 22:41:44 +0200 (Wed, 04 Jun 2008) | 2 lines
Fixed complex.__getnewargs__() to not emit another complex object.
........
r63970 | andrew.kuchling | 2008-06-06 01:33:54 +0200 (Fri, 06 Jun 2008) | 1 line
Document 'utc' parameter
........
r63971 | andrew.kuchling | 2008-06-06 01:35:31 +0200 (Fri, 06 Jun 2008) | 1 line
Add various items
........
r63972 | andrew.kuchling | 2008-06-06 01:35:48 +0200 (Fri, 06 Jun 2008) | 1 line
Grammar fix
........
r63976 | georg.brandl | 2008-06-06 09:34:50 +0200 (Fri, 06 Jun 2008) | 2 lines
Markup fix.
........
r63989 | thomas.heller | 2008-06-06 20:42:11 +0200 (Fri, 06 Jun 2008) | 2 lines
Add a reminder for the maintainer of whatsnew.
........
r64014 | georg.brandl | 2008-06-07 17:59:10 +0200 (Sat, 07 Jun 2008) | 3 lines
Factor out docstring dedenting from inspect.getdoc() into inspect.cleandoc()
to ease standalone use of the algorithm.
........
r64015 | georg.brandl | 2008-06-07 18:04:01 +0200 (Sat, 07 Jun 2008) | 2 lines
Revert unwanted changes.
........
r64021 | georg.brandl | 2008-06-07 20:16:12 +0200 (Sat, 07 Jun 2008) | 2 lines
X-ref to numbers module.
........
r64022 | georg.brandl | 2008-06-07 20:17:37 +0200 (Sat, 07 Jun 2008) | 3 lines
Document the "st" API, to avoid confusion with the "new" AST.
Add a note about using the new AST module.
........
r64063 | martin.v.loewis | 2008-06-10 07:03:35 +0200 (Tue, 10 Jun 2008) | 2 lines
Add Gregor Lingl.
........
r64064 | georg.brandl | 2008-06-10 09:45:28 +0200 (Tue, 10 Jun 2008) | 2 lines
Add the "ast" module, containing helpers to ease use of the "_ast" classes.
........
r64065 | raymond.hettinger | 2008-06-10 09:57:15 +0200 (Tue, 10 Jun 2008) | 1 line
Add Arnaud for his efforts on multi-arg set operations.
........
r64067 | georg.brandl | 2008-06-10 14:46:39 +0200 (Tue, 10 Jun 2008) | 2 lines
#2536: fix itertools.permutations and itertools.combinations docstrings.
........
2008-06-11 00:37:50 +08:00
|
|
|
|
|
|
|
|
|
|
|
def parse(expr, filename='<unknown>', mode='exec'):
|
|
|
|
"""
|
|
|
|
Parse an expression into an AST node.
|
|
|
|
Equivalent to compile(expr, filename, mode, PyCF_ONLY_AST).
|
|
|
|
"""
|
|
|
|
return compile(expr, filename, mode, PyCF_ONLY_AST)
|
|
|
|
|
|
|
|
|
|
|
|
def literal_eval(node_or_string):
|
|
|
|
"""
|
|
|
|
Safely evaluate an expression node or a string containing a Python
|
|
|
|
expression. The string or node provided may only consist of the following
|
|
|
|
Python literal structures: strings, numbers, tuples, lists, dicts, booleans,
|
|
|
|
and None.
|
|
|
|
"""
|
|
|
|
_safe_names = {'None': None, 'True': True, 'False': False}
|
|
|
|
if isinstance(node_or_string, str):
|
|
|
|
node_or_string = parse(node_or_string, mode='eval')
|
|
|
|
if isinstance(node_or_string, Expression):
|
|
|
|
node_or_string = node_or_string.body
|
|
|
|
def _convert(node):
|
|
|
|
if isinstance(node, Str):
|
|
|
|
return node.s
|
|
|
|
elif isinstance(node, Num):
|
|
|
|
return node.n
|
|
|
|
elif isinstance(node, Tuple):
|
|
|
|
return tuple(map(_convert, node.elts))
|
|
|
|
elif isinstance(node, List):
|
|
|
|
return list(map(_convert, node.elts))
|
|
|
|
elif isinstance(node, Dict):
|
|
|
|
return dict((_convert(k), _convert(v)) for k, v
|
|
|
|
in zip(node.keys, node.values))
|
|
|
|
elif isinstance(node, Name):
|
|
|
|
if node.id in _safe_names:
|
|
|
|
return _safe_names[node.id]
|
Merged revisions 68450,68480-68481,68493,68495,68501,68512,68514-68515,68534-68536,68552,68563,68570-68572,68575,68582,68596,68623-68624,68628 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r68450 | jeffrey.yasskin | 2009-01-09 10:47:07 -0600 (Fri, 09 Jan 2009) | 3 lines
Fix issue 4884, preventing a crash in the socket code when python is compiled
with llvm-gcc and run with a glibc <2.10.
........
r68480 | vinay.sajip | 2009-01-10 07:38:04 -0600 (Sat, 10 Jan 2009) | 1 line
Minor documentation changes cross-referencing NullHandler to the documentation on configuring logging in a library.
........
r68481 | vinay.sajip | 2009-01-10 07:42:04 -0600 (Sat, 10 Jan 2009) | 1 line
Corrected an incorrect self-reference.
........
r68493 | benjamin.peterson | 2009-01-10 11:18:55 -0600 (Sat, 10 Jan 2009) | 1 line
rewrite verbose conditionals
........
r68495 | benjamin.peterson | 2009-01-10 11:36:44 -0600 (Sat, 10 Jan 2009) | 1 line
tp_iter only exists with Py_TPFLAGS_HAVE_ITER #4901
........
r68501 | vinay.sajip | 2009-01-10 13:22:57 -0600 (Sat, 10 Jan 2009) | 1 line
Corrected minor typo and added .currentmodule directives to fix missing cross-references.
........
r68512 | benjamin.peterson | 2009-01-10 16:42:10 -0600 (Sat, 10 Jan 2009) | 1 line
make tests fail if they can't be imported
........
r68514 | benjamin.peterson | 2009-01-10 17:41:59 -0600 (Sat, 10 Jan 2009) | 1 line
move seealso to a more appropiate place
........
r68515 | benjamin.peterson | 2009-01-10 17:49:08 -0600 (Sat, 10 Jan 2009) | 1 line
macos 9 isn't supported
........
r68534 | gregory.p.smith | 2009-01-11 11:53:33 -0600 (Sun, 11 Jan 2009) | 2 lines
correct email address
........
r68535 | gregory.p.smith | 2009-01-11 11:57:54 -0600 (Sun, 11 Jan 2009) | 9 lines
Update the documentation for binascii and zlib crc32/adler32 functions
to better describe the signed vs unsigned return value behavior on
different platforms and versions of python. Mention the workaround to
make them all return the same thing by using & 0xffffffff.
Fixes issue4903.
Also needs to be merged into release26-maint, release30-maint, & py3k.
........
r68536 | benjamin.peterson | 2009-01-11 13:48:15 -0600 (Sun, 11 Jan 2009) | 1 line
add email addresses
........
r68552 | vinay.sajip | 2009-01-12 14:36:18 -0600 (Mon, 12 Jan 2009) | 1 line
Minor changes/corrections in markup.
........
r68563 | benjamin.peterson | 2009-01-12 19:49:10 -0600 (Mon, 12 Jan 2009) | 1 line
small logic correction
........
r68570 | raymond.hettinger | 2009-01-13 03:08:32 -0600 (Tue, 13 Jan 2009) | 5 lines
Issue 4922: Incorrect comments for MutableSet.add() and MutableSet.discard().
Needs to be backported to 2.6 and forward ported to 3.0 and 3.1.
........
r68571 | armin.ronacher | 2009-01-13 05:52:23 -0600 (Tue, 13 Jan 2009) | 3 lines
ast.literal_eval can properly evaluate complex numbers now. This fixes issue4907.
........
r68572 | andrew.kuchling | 2009-01-13 07:40:54 -0600 (Tue, 13 Jan 2009) | 1 line
Note that first coord. is left alone
........
r68575 | thomas.heller | 2009-01-13 11:32:28 -0600 (Tue, 13 Jan 2009) | 1 line
Fix refcount leak in error cases. Bug found by coverity.
........
r68582 | georg.brandl | 2009-01-13 16:14:01 -0600 (Tue, 13 Jan 2009) | 2 lines
Use assertRaises.
........
r68596 | amaury.forgeotdarc | 2009-01-13 17:39:22 -0600 (Tue, 13 Jan 2009) | 3 lines
#1162154: inspect.getmembers() now skips attributes that raise AttributeError,
e.g. a __slots__ attribute which has not been set.
........
r68623 | vinay.sajip | 2009-01-15 16:48:13 -0600 (Thu, 15 Jan 2009) | 1 line
Made minor changes/corrections in markup. Added a couple of section headings.
........
r68624 | vinay.sajip | 2009-01-15 17:04:47 -0600 (Thu, 15 Jan 2009) | 1 line
Minor changes/corrections in markup.
........
r68628 | benjamin.peterson | 2009-01-15 20:55:24 -0600 (Thu, 15 Jan 2009) | 1 line
compare with == not is #4946
........
2009-01-16 11:54:08 +08:00
|
|
|
elif isinstance(node, BinOp) and \
|
|
|
|
isinstance(node.op, (Add, Sub)) and \
|
|
|
|
isinstance(node.right, Num) and \
|
|
|
|
isinstance(node.right.n, complex) and \
|
|
|
|
isinstance(node.left, Num) and \
|
|
|
|
isinstance(node.left.n, (int, float)):
|
|
|
|
left = node.left.n
|
|
|
|
right = node.right.n
|
|
|
|
if isinstance(node.op, Add):
|
|
|
|
return left + right
|
|
|
|
else:
|
|
|
|
return left - right
|
Merged revisions 63829-63831,63858,63865,63879,63882,63948,63970-63972,63976,63989,64014-64015,64021-64022,64063-64065,64067 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r63829 | mark.summerfield | 2008-05-31 15:05:34 +0200 (Sat, 31 May 2008) | 4 lines
Added a note to [] that special forms & special chars lose their meaning
and backrefs can't be used inside []
........
r63830 | georg.brandl | 2008-05-31 16:40:09 +0200 (Sat, 31 May 2008) | 2 lines
#3010: clarification about stdin/use_rawinput.
........
r63831 | georg.brandl | 2008-05-31 16:45:55 +0200 (Sat, 31 May 2008) | 2 lines
#3005: add explaining sentence to easydialogs docs.
........
r63858 | georg.brandl | 2008-06-01 18:41:31 +0200 (Sun, 01 Jun 2008) | 2 lines
Add plain text make target.
........
r63865 | georg.brandl | 2008-06-01 21:24:36 +0200 (Sun, 01 Jun 2008) | 2 lines
Spaces vs. tabs.
........
r63879 | gregory.p.smith | 2008-06-02 00:57:47 +0200 (Mon, 02 Jun 2008) | 3 lines
Make the _H #define's match the header file names. Fix comments to
mention the correct type names.
........
r63882 | gregory.p.smith | 2008-06-02 01:48:47 +0200 (Mon, 02 Jun 2008) | 3 lines
Adds a Thread.getIdent() method to provide the _get_ident() value for
any given threading.Thread object. feature request issue 2871.
........
r63948 | alexandre.vassalotti | 2008-06-04 22:41:44 +0200 (Wed, 04 Jun 2008) | 2 lines
Fixed complex.__getnewargs__() to not emit another complex object.
........
r63970 | andrew.kuchling | 2008-06-06 01:33:54 +0200 (Fri, 06 Jun 2008) | 1 line
Document 'utc' parameter
........
r63971 | andrew.kuchling | 2008-06-06 01:35:31 +0200 (Fri, 06 Jun 2008) | 1 line
Add various items
........
r63972 | andrew.kuchling | 2008-06-06 01:35:48 +0200 (Fri, 06 Jun 2008) | 1 line
Grammar fix
........
r63976 | georg.brandl | 2008-06-06 09:34:50 +0200 (Fri, 06 Jun 2008) | 2 lines
Markup fix.
........
r63989 | thomas.heller | 2008-06-06 20:42:11 +0200 (Fri, 06 Jun 2008) | 2 lines
Add a reminder for the maintainer of whatsnew.
........
r64014 | georg.brandl | 2008-06-07 17:59:10 +0200 (Sat, 07 Jun 2008) | 3 lines
Factor out docstring dedenting from inspect.getdoc() into inspect.cleandoc()
to ease standalone use of the algorithm.
........
r64015 | georg.brandl | 2008-06-07 18:04:01 +0200 (Sat, 07 Jun 2008) | 2 lines
Revert unwanted changes.
........
r64021 | georg.brandl | 2008-06-07 20:16:12 +0200 (Sat, 07 Jun 2008) | 2 lines
X-ref to numbers module.
........
r64022 | georg.brandl | 2008-06-07 20:17:37 +0200 (Sat, 07 Jun 2008) | 3 lines
Document the "st" API, to avoid confusion with the "new" AST.
Add a note about using the new AST module.
........
r64063 | martin.v.loewis | 2008-06-10 07:03:35 +0200 (Tue, 10 Jun 2008) | 2 lines
Add Gregor Lingl.
........
r64064 | georg.brandl | 2008-06-10 09:45:28 +0200 (Tue, 10 Jun 2008) | 2 lines
Add the "ast" module, containing helpers to ease use of the "_ast" classes.
........
r64065 | raymond.hettinger | 2008-06-10 09:57:15 +0200 (Tue, 10 Jun 2008) | 1 line
Add Arnaud for his efforts on multi-arg set operations.
........
r64067 | georg.brandl | 2008-06-10 14:46:39 +0200 (Tue, 10 Jun 2008) | 2 lines
#2536: fix itertools.permutations and itertools.combinations docstrings.
........
2008-06-11 00:37:50 +08:00
|
|
|
raise ValueError('malformed string')
|
|
|
|
return _convert(node_or_string)
|
|
|
|
|
|
|
|
|
|
|
|
def dump(node, annotate_fields=True, include_attributes=False):
|
|
|
|
"""
|
|
|
|
Return a formatted dump of the tree in *node*. This is mainly useful for
|
|
|
|
debugging purposes. The returned string will show the names and the values
|
|
|
|
for fields. This makes the code impossible to evaluate, so if evaluation is
|
|
|
|
wanted *annotate_fields* must be set to False. Attributes such as line
|
Merged revisions 64434-64435,64440-64443,64445,64447-64448,64450,64452,64455,64461,64464,64466,64468 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r64434 | andrew.kuchling | 2008-06-20 18:13:58 -0500 (Fri, 20 Jun 2008) | 1 line
Remove request for e-mail; it's unlikely these classes will be saved
........
r64435 | andrew.kuchling | 2008-06-20 18:14:32 -0500 (Fri, 20 Jun 2008) | 1 line
Grammar fixes
........
r64440 | andrew.kuchling | 2008-06-21 08:29:12 -0500 (Sat, 21 Jun 2008) | 1 line
Docstring typo
........
r64441 | andrew.kuchling | 2008-06-21 08:47:20 -0500 (Sat, 21 Jun 2008) | 1 line
Use repr() for bad input strings; this makes the empty string or binary characters more visible
........
r64442 | andrew.kuchling | 2008-06-21 08:48:38 -0500 (Sat, 21 Jun 2008) | 1 line
Docstring correction
........
r64443 | georg.brandl | 2008-06-21 09:26:19 -0500 (Sat, 21 Jun 2008) | 2 lines
Documentation fix.
........
r64445 | facundo.batista | 2008-06-21 12:30:06 -0500 (Sat, 21 Jun 2008) | 3 lines
Reviewed and updated the documentation. Fixes #3017.
........
r64447 | facundo.batista | 2008-06-21 13:58:04 -0500 (Sat, 21 Jun 2008) | 6 lines
Now a from submitted via POST that also has a query string
will contain both FieldStorage and MiniFieldStorage items.
Fixes #1817.
........
r64448 | facundo.batista | 2008-06-21 14:48:19 -0500 (Sat, 21 Jun 2008) | 5 lines
In the deprecated functions I added an alert to review
specially a section of the subprocess documentation
that helps with the replacing of those functionss.
........
r64450 | georg.brandl | 2008-06-22 04:05:29 -0500 (Sun, 22 Jun 2008) | 2 lines
Turn section references into proper cross-references.
........
r64452 | facundo.batista | 2008-06-22 08:36:20 -0500 (Sun, 22 Jun 2008) | 5 lines
Issue #2722. Now the char buffer to support the path string has
not fixed length, it mallocs memory if needed. As a result, we
don't have a maximum for the getcwd() method.
........
r64455 | facundo.batista | 2008-06-22 10:27:10 -0500 (Sun, 22 Jun 2008) | 4 lines
Issue 3164. Small fix to don't repeat a comparation
without necessity.
........
r64461 | georg.brandl | 2008-06-22 13:11:52 -0500 (Sun, 22 Jun 2008) | 2 lines
#3085: Fix syntax error.
........
r64464 | georg.brandl | 2008-06-22 13:31:54 -0500 (Sun, 22 Jun 2008) | 2 lines
Expand docstrings of sqlite3 functions.
........
r64466 | georg.brandl | 2008-06-22 14:07:59 -0500 (Sun, 22 Jun 2008) | 2 lines
Write out "phi" consistently.
........
r64468 | facundo.batista | 2008-06-22 14:35:24 -0500 (Sun, 22 Jun 2008) | 4 lines
Just returning nothing instead of rising TestSkipped, because
it makes the test fail in the trunk.loewis-sun buildbot.
........
2008-07-03 01:30:14 +08:00
|
|
|
numbers and column offsets are not dumped by default. If this is wanted,
|
Merged revisions 63829-63831,63858,63865,63879,63882,63948,63970-63972,63976,63989,64014-64015,64021-64022,64063-64065,64067 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk
........
r63829 | mark.summerfield | 2008-05-31 15:05:34 +0200 (Sat, 31 May 2008) | 4 lines
Added a note to [] that special forms & special chars lose their meaning
and backrefs can't be used inside []
........
r63830 | georg.brandl | 2008-05-31 16:40:09 +0200 (Sat, 31 May 2008) | 2 lines
#3010: clarification about stdin/use_rawinput.
........
r63831 | georg.brandl | 2008-05-31 16:45:55 +0200 (Sat, 31 May 2008) | 2 lines
#3005: add explaining sentence to easydialogs docs.
........
r63858 | georg.brandl | 2008-06-01 18:41:31 +0200 (Sun, 01 Jun 2008) | 2 lines
Add plain text make target.
........
r63865 | georg.brandl | 2008-06-01 21:24:36 +0200 (Sun, 01 Jun 2008) | 2 lines
Spaces vs. tabs.
........
r63879 | gregory.p.smith | 2008-06-02 00:57:47 +0200 (Mon, 02 Jun 2008) | 3 lines
Make the _H #define's match the header file names. Fix comments to
mention the correct type names.
........
r63882 | gregory.p.smith | 2008-06-02 01:48:47 +0200 (Mon, 02 Jun 2008) | 3 lines
Adds a Thread.getIdent() method to provide the _get_ident() value for
any given threading.Thread object. feature request issue 2871.
........
r63948 | alexandre.vassalotti | 2008-06-04 22:41:44 +0200 (Wed, 04 Jun 2008) | 2 lines
Fixed complex.__getnewargs__() to not emit another complex object.
........
r63970 | andrew.kuchling | 2008-06-06 01:33:54 +0200 (Fri, 06 Jun 2008) | 1 line
Document 'utc' parameter
........
r63971 | andrew.kuchling | 2008-06-06 01:35:31 +0200 (Fri, 06 Jun 2008) | 1 line
Add various items
........
r63972 | andrew.kuchling | 2008-06-06 01:35:48 +0200 (Fri, 06 Jun 2008) | 1 line
Grammar fix
........
r63976 | georg.brandl | 2008-06-06 09:34:50 +0200 (Fri, 06 Jun 2008) | 2 lines
Markup fix.
........
r63989 | thomas.heller | 2008-06-06 20:42:11 +0200 (Fri, 06 Jun 2008) | 2 lines
Add a reminder for the maintainer of whatsnew.
........
r64014 | georg.brandl | 2008-06-07 17:59:10 +0200 (Sat, 07 Jun 2008) | 3 lines
Factor out docstring dedenting from inspect.getdoc() into inspect.cleandoc()
to ease standalone use of the algorithm.
........
r64015 | georg.brandl | 2008-06-07 18:04:01 +0200 (Sat, 07 Jun 2008) | 2 lines
Revert unwanted changes.
........
r64021 | georg.brandl | 2008-06-07 20:16:12 +0200 (Sat, 07 Jun 2008) | 2 lines
X-ref to numbers module.
........
r64022 | georg.brandl | 2008-06-07 20:17:37 +0200 (Sat, 07 Jun 2008) | 3 lines
Document the "st" API, to avoid confusion with the "new" AST.
Add a note about using the new AST module.
........
r64063 | martin.v.loewis | 2008-06-10 07:03:35 +0200 (Tue, 10 Jun 2008) | 2 lines
Add Gregor Lingl.
........
r64064 | georg.brandl | 2008-06-10 09:45:28 +0200 (Tue, 10 Jun 2008) | 2 lines
Add the "ast" module, containing helpers to ease use of the "_ast" classes.
........
r64065 | raymond.hettinger | 2008-06-10 09:57:15 +0200 (Tue, 10 Jun 2008) | 1 line
Add Arnaud for his efforts on multi-arg set operations.
........
r64067 | georg.brandl | 2008-06-10 14:46:39 +0200 (Tue, 10 Jun 2008) | 2 lines
#2536: fix itertools.permutations and itertools.combinations docstrings.
........
2008-06-11 00:37:50 +08:00
|
|
|
*include_attributes* can be set to True.
|
|
|
|
"""
|
|
|
|
def _format(node):
|
|
|
|
if isinstance(node, AST):
|
|
|
|
fields = [(a, _format(b)) for a, b in iter_fields(node)]
|
|
|
|
rv = '%s(%s' % (node.__class__.__name__, ', '.join(
|
|
|
|
('%s=%s' % field for field in fields)
|
|
|
|
if annotate_fields else
|
|
|
|
(b for a, b in fields)
|
|
|
|
))
|
|
|
|
if include_attributes and node._attributes:
|
|
|
|
rv += fields and ', ' or ' '
|
|
|
|
rv += ', '.join('%s=%s' % (a, _format(getattr(node, a)))
|
|
|
|
for a in node._attributes)
|
|
|
|
return rv + ')'
|
|
|
|
elif isinstance(node, list):
|
|
|
|
return '[%s]' % ', '.join(_format(x) for x in node)
|
|
|
|
return repr(node)
|
|
|
|
if not isinstance(node, AST):
|
|
|
|
raise TypeError('expected AST, got %r' % node.__class__.__name__)
|
|
|
|
return _format(node)
|
|
|
|
|
|
|
|
|
|
|
|
def copy_location(new_node, old_node):
|
|
|
|
"""
|
|
|
|
Copy source location (`lineno` and `col_offset` attributes) from
|
|
|
|
*old_node* to *new_node* if possible, and return *new_node*.
|
|
|
|
"""
|
|
|
|
for attr in 'lineno', 'col_offset':
|
|
|
|
if attr in old_node._attributes and attr in new_node._attributes \
|
|
|
|
and hasattr(old_node, attr):
|
|
|
|
setattr(new_node, attr, getattr(old_node, attr))
|
|
|
|
return new_node
|
|
|
|
|
|
|
|
|
|
|
|
def fix_missing_locations(node):
|
|
|
|
"""
|
|
|
|
When you compile a node tree with compile(), the compiler expects lineno and
|
|
|
|
col_offset attributes for every node that supports them. This is rather
|
|
|
|
tedious to fill in for generated nodes, so this helper adds these attributes
|
|
|
|
recursively where not already set, by setting them to the values of the
|
|
|
|
parent node. It works recursively starting at *node*.
|
|
|
|
"""
|
|
|
|
def _fix(node, lineno, col_offset):
|
|
|
|
if 'lineno' in node._attributes:
|
|
|
|
if not hasattr(node, 'lineno'):
|
|
|
|
node.lineno = lineno
|
|
|
|
else:
|
|
|
|
lineno = node.lineno
|
|
|
|
if 'col_offset' in node._attributes:
|
|
|
|
if not hasattr(node, 'col_offset'):
|
|
|
|
node.col_offset = col_offset
|
|
|
|
else:
|
|
|
|
col_offset = node.col_offset
|
|
|
|
for child in iter_child_nodes(node):
|
|
|
|
_fix(child, lineno, col_offset)
|
|
|
|
_fix(node, 1, 0)
|
|
|
|
return node
|
|
|
|
|
|
|
|
|
|
|
|
def increment_lineno(node, n=1):
|
|
|
|
"""
|
|
|
|
Increment the line number of each node in the tree starting at *node* by *n*.
|
|
|
|
This is useful to "move code" to a different location in a file.
|
|
|
|
"""
|
|
|
|
if 'lineno' in node._attributes:
|
|
|
|
node.lineno = getattr(node, 'lineno', 0) + n
|
|
|
|
for child in walk(node):
|
|
|
|
if 'lineno' in child._attributes:
|
|
|
|
child.lineno = getattr(child, 'lineno', 0) + n
|
|
|
|
return node
|
|
|
|
|
|
|
|
|
|
|
|
def iter_fields(node):
|
|
|
|
"""
|
|
|
|
Yield a tuple of ``(fieldname, value)`` for each field in ``node._fields``
|
|
|
|
that is present on *node*.
|
|
|
|
"""
|
|
|
|
for field in node._fields:
|
|
|
|
try:
|
|
|
|
yield field, getattr(node, field)
|
|
|
|
except AttributeError:
|
|
|
|
pass
|
|
|
|
|
|
|
|
|
|
|
|
def iter_child_nodes(node):
|
|
|
|
"""
|
|
|
|
Yield all direct child nodes of *node*, that is, all fields that are nodes
|
|
|
|
and all items of fields that are lists of nodes.
|
|
|
|
"""
|
|
|
|
for name, field in iter_fields(node):
|
|
|
|
if isinstance(field, AST):
|
|
|
|
yield field
|
|
|
|
elif isinstance(field, list):
|
|
|
|
for item in field:
|
|
|
|
if isinstance(item, AST):
|
|
|
|
yield item
|
|
|
|
|
|
|
|
|
|
|
|
def get_docstring(node, clean=True):
|
|
|
|
"""
|
|
|
|
Return the docstring for the given node or None if no docstring can
|
|
|
|
be found. If the node provided does not have docstrings a TypeError
|
|
|
|
will be raised.
|
|
|
|
"""
|
|
|
|
if not isinstance(node, (FunctionDef, ClassDef, Module)):
|
|
|
|
raise TypeError("%r can't have docstrings" % node.__class__.__name__)
|
|
|
|
if node.body and isinstance(node.body[0], Expr) and \
|
|
|
|
isinstance(node.body[0].value, Str):
|
|
|
|
if clean:
|
|
|
|
import inspect
|
|
|
|
return inspect.cleandoc(node.body[0].value.s)
|
|
|
|
return node.body[0].value.s
|
|
|
|
|
|
|
|
|
|
|
|
def walk(node):
|
|
|
|
"""
|
|
|
|
Recursively yield all child nodes of *node*, in no specified order. This is
|
|
|
|
useful if you only want to modify nodes in place and don't care about the
|
|
|
|
context.
|
|
|
|
"""
|
|
|
|
from collections import deque
|
|
|
|
todo = deque([node])
|
|
|
|
while todo:
|
|
|
|
node = todo.popleft()
|
|
|
|
todo.extend(iter_child_nodes(node))
|
|
|
|
yield node
|
|
|
|
|
|
|
|
|
|
|
|
class NodeVisitor(object):
|
|
|
|
"""
|
|
|
|
A node visitor base class that walks the abstract syntax tree and calls a
|
|
|
|
visitor function for every node found. This function may return a value
|
|
|
|
which is forwarded by the `visit` method.
|
|
|
|
|
|
|
|
This class is meant to be subclassed, with the subclass adding visitor
|
|
|
|
methods.
|
|
|
|
|
|
|
|
Per default the visitor functions for the nodes are ``'visit_'`` +
|
|
|
|
class name of the node. So a `TryFinally` node visit function would
|
|
|
|
be `visit_TryFinally`. This behavior can be changed by overriding
|
|
|
|
the `visit` method. If no visitor function exists for a node
|
|
|
|
(return value `None`) the `generic_visit` visitor is used instead.
|
|
|
|
|
|
|
|
Don't use the `NodeVisitor` if you want to apply changes to nodes during
|
|
|
|
traversing. For this a special visitor exists (`NodeTransformer`) that
|
|
|
|
allows modifications.
|
|
|
|
"""
|
|
|
|
|
|
|
|
def visit(self, node):
|
|
|
|
"""Visit a node."""
|
|
|
|
method = 'visit_' + node.__class__.__name__
|
|
|
|
visitor = getattr(self, method, self.generic_visit)
|
|
|
|
return visitor(node)
|
|
|
|
|
|
|
|
def generic_visit(self, node):
|
|
|
|
"""Called if no explicit visitor function exists for a node."""
|
|
|
|
for field, value in iter_fields(node):
|
|
|
|
if isinstance(value, list):
|
|
|
|
for item in value:
|
|
|
|
if isinstance(item, AST):
|
|
|
|
self.visit(item)
|
|
|
|
elif isinstance(value, AST):
|
|
|
|
self.visit(value)
|
|
|
|
|
|
|
|
|
|
|
|
class NodeTransformer(NodeVisitor):
|
|
|
|
"""
|
|
|
|
A :class:`NodeVisitor` subclass that walks the abstract syntax tree and
|
|
|
|
allows modification of nodes.
|
|
|
|
|
|
|
|
The `NodeTransformer` will walk the AST and use the return value of the
|
|
|
|
visitor methods to replace or remove the old node. If the return value of
|
|
|
|
the visitor method is ``None``, the node will be removed from its location,
|
|
|
|
otherwise it is replaced with the return value. The return value may be the
|
|
|
|
original node in which case no replacement takes place.
|
|
|
|
|
|
|
|
Here is an example transformer that rewrites all occurrences of name lookups
|
|
|
|
(``foo``) to ``data['foo']``::
|
|
|
|
|
|
|
|
class RewriteName(NodeTransformer):
|
|
|
|
|
|
|
|
def visit_Name(self, node):
|
|
|
|
return copy_location(Subscript(
|
|
|
|
value=Name(id='data', ctx=Load()),
|
|
|
|
slice=Index(value=Str(s=node.id)),
|
|
|
|
ctx=node.ctx
|
|
|
|
), node)
|
|
|
|
|
|
|
|
Keep in mind that if the node you're operating on has child nodes you must
|
|
|
|
either transform the child nodes yourself or call the :meth:`generic_visit`
|
|
|
|
method for the node first.
|
|
|
|
|
|
|
|
For nodes that were part of a collection of statements (that applies to all
|
|
|
|
statement nodes), the visitor may also return a list of nodes rather than
|
|
|
|
just a single node.
|
|
|
|
|
|
|
|
Usually you use the transformer like this::
|
|
|
|
|
|
|
|
node = YourTransformer().visit(node)
|
|
|
|
"""
|
|
|
|
|
|
|
|
def generic_visit(self, node):
|
|
|
|
for field, old_value in iter_fields(node):
|
|
|
|
old_value = getattr(node, field, None)
|
|
|
|
if isinstance(old_value, list):
|
|
|
|
new_values = []
|
|
|
|
for value in old_value:
|
|
|
|
if isinstance(value, AST):
|
|
|
|
value = self.visit(value)
|
|
|
|
if value is None:
|
|
|
|
continue
|
|
|
|
elif not isinstance(value, AST):
|
|
|
|
new_values.extend(value)
|
|
|
|
continue
|
|
|
|
new_values.append(value)
|
|
|
|
old_value[:] = new_values
|
|
|
|
elif isinstance(old_value, AST):
|
|
|
|
new_node = self.visit(old_value)
|
|
|
|
if new_node is None:
|
|
|
|
delattr(node, field)
|
|
|
|
else:
|
|
|
|
setattr(node, field, new_node)
|
|
|
|
return node
|