cpython/Lib/lib2to3/fixes/fix_itertools.py
Martin v. Löwis baf267ceae Merged revisions 61602-61723 via svnmerge from
svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3

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  r61626 | david.wolever | 2008-03-19 17:19:16 +0100 (Mi, 19 Mär 2008) | 1 line

  Added fixer for implicit local imports.  See #2414.
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  r61628 | david.wolever | 2008-03-19 17:57:43 +0100 (Mi, 19 Mär 2008) | 1 line

  Added a class for tests which should not run if a particular import is found.
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  r61629 | collin.winter | 2008-03-19 17:58:19 +0100 (Mi, 19 Mär 2008) | 1 line

  Two more relative import fixes in pgen2.
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  r61635 | david.wolever | 2008-03-19 20:16:03 +0100 (Mi, 19 Mär 2008) | 1 line

  Fixed print fixer so it will do the Right Thing when it encounters __future__.print_function.  2to3 gets upset, though, so the tests have been commented out.
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  r61637 | david.wolever | 2008-03-19 21:37:17 +0100 (Mi, 19 Mär 2008) | 3 lines

  Added a fixer for itertools imports (from itertools import imap, ifilterfalse --> from itertools import filterfalse)
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  r61645 | david.wolever | 2008-03-19 23:22:35 +0100 (Mi, 19 Mär 2008) | 1 line

  SVN is happier when you add the files you create... -_-'
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  r61654 | david.wolever | 2008-03-20 01:09:56 +0100 (Do, 20 Mär 2008) | 1 line

  Added an explicit sort order to fixers -- fixes problems like #2427
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  r61664 | david.wolever | 2008-03-20 04:32:40 +0100 (Do, 20 Mär 2008) | 3 lines

  Fixes #2428 -- comments are no longer eatten by __future__ fixer.
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  r61673 | david.wolever | 2008-03-20 17:22:40 +0100 (Do, 20 Mär 2008) | 1 line

  Added 2to3 node pretty-printer
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  r61679 | david.wolever | 2008-03-20 20:50:42 +0100 (Do, 20 Mär 2008) | 1 line

  Made node printing a little bit prettier
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  r61723 | martin.v.loewis | 2008-03-22 00:59:27 +0100 (Sa, 22 Mär 2008) | 2 lines

  Fix whitespace.
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2008-03-22 00:01:12 +00:00

41 lines
1.4 KiB
Python

""" Fixer for itertools.(imap|ifilter|izip) --> (map|filter|zip) and
itertools.ifilterfalse --> itertools.filterfalse (bugs 2360-2363)
imports from itertools are fixed in fix_itertools_import.py
If itertools is imported as something else (ie: import itertools as it;
it.izip(spam, eggs)) method calls will not get fixed.
"""
# Local imports
from . import basefix
from .util import Name
class FixItertools(basefix.BaseFix):
it_funcs = "('imap'|'ifilter'|'izip'|'ifilterfalse')"
PATTERN = """
power< it='itertools'
trailer<
dot='.' func=%(it_funcs)s > trailer< '(' [any] ')' > >
|
power< func=%(it_funcs)s trailer< '(' [any] ')' > >
""" %(locals())
# Needs to be run after fix_(map|zip|filter)
run_order = 6
def transform(self, node, results):
prefix = None
func = results['func'][0]
if 'it' in results and func.value != 'ifilterfalse':
dot, it = (results['dot'], results['it'])
# Remove the 'itertools'
prefix = it.get_prefix()
it.remove()
# Replace the node wich contains ('.', 'function') with the
# function (to be consistant with the second part of the pattern)
dot.remove()
func.parent.replace(func)
prefix = prefix or func.get_prefix()
func.replace(Name(func.value[1:], prefix=prefix))