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