44 lines
1.5 KiB
Python
44 lines
1.5 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 fixer_base
|
|
from ..fixer_util import Name
|
|
|
|
class FixItertools(fixer_base.BaseFix):
|
|
BM_compatible = True
|
|
it_funcs = "('imap'|'ifilter'|'izip'|'izip_longest'|'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 not in (u'ifilterfalse', u'izip_longest')):
|
|
dot, it = (results['dot'], results['it'])
|
|
# Remove the 'itertools'
|
|
prefix = it.prefix
|
|
it.remove()
|
|
# Replace the node which contains ('.', 'function') with the
|
|
# function (to be consistent with the second part of the pattern)
|
|
dot.remove()
|
|
func.parent.replace(func)
|
|
|
|
prefix = prefix or func.prefix
|
|
func.replace(Name(func.value[1:], prefix=prefix))
|