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| """ 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 ('ifilterfalse', '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)) | |