| 1 | n/a | """ Fixer for itertools.(imap|ifilter|izip) --> (map|filter|zip) and |
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| 2 | n/a | itertools.ifilterfalse --> itertools.filterfalse (bugs 2360-2363) |
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| 3 | n/a | |
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| 4 | n/a | imports from itertools are fixed in fix_itertools_import.py |
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| 5 | n/a | |
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| 6 | n/a | If itertools is imported as something else (ie: import itertools as it; |
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| 7 | n/a | it.izip(spam, eggs)) method calls will not get fixed. |
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| 8 | n/a | """ |
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| 9 | n/a | |
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| 10 | n/a | # Local imports |
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| 11 | n/a | from .. import fixer_base |
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| 12 | n/a | from ..fixer_util import Name |
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| 13 | n/a | |
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| 14 | n/a | class FixItertools(fixer_base.BaseFix): |
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| 15 | n/a | BM_compatible = True |
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| 16 | n/a | it_funcs = "('imap'|'ifilter'|'izip'|'izip_longest'|'ifilterfalse')" |
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| 17 | n/a | PATTERN = """ |
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| 18 | n/a | power< it='itertools' |
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| 19 | n/a | trailer< |
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| 20 | n/a | dot='.' func=%(it_funcs)s > trailer< '(' [any] ')' > > |
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| 21 | n/a | | |
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| 22 | n/a | power< func=%(it_funcs)s trailer< '(' [any] ')' > > |
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| 23 | n/a | """ %(locals()) |
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| 24 | n/a | |
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| 25 | n/a | # Needs to be run after fix_(map|zip|filter) |
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| 26 | n/a | run_order = 6 |
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| 27 | n/a | |
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| 28 | n/a | def transform(self, node, results): |
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| 29 | n/a | prefix = None |
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| 30 | n/a | func = results['func'][0] |
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| 31 | n/a | if ('it' in results and |
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| 32 | n/a | func.value not in ('ifilterfalse', 'izip_longest')): |
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| 33 | n/a | dot, it = (results['dot'], results['it']) |
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| 34 | n/a | # Remove the 'itertools' |
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| 35 | n/a | prefix = it.prefix |
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| 36 | n/a | it.remove() |
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| 37 | n/a | # Replace the node which contains ('.', 'function') with the |
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| 38 | n/a | # function (to be consistent with the second part of the pattern) |
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| 39 | n/a | dot.remove() |
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| 40 | n/a | func.parent.replace(func) |
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| 41 | n/a | |
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| 42 | n/a | prefix = prefix or func.prefix |
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| 43 | n/a | func.replace(Name(func.value[1:], prefix=prefix)) |
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