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Suggest using os.path.basename or dirname instead of split #18

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Suggest using os.path.basename or dirname instead of split #18

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17 changes: 17 additions & 0 deletions refex/fix/fixers/idiom_fixers.py
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Original file line number Diff line number Diff line change
Expand Up @@ -236,6 +236,7 @@ def f(x):

_NEGATION_CATEGORY = 'pylint.g-comparison-negation'
_UNNECESSARY_COMPREHENSION_CATEGORY = 'idioms.uncessary-comprehension'
_OS_PATH_CATEGORY = 'idioms.os-path'

_Try = getattr(ast_matchers, 'Try', getattr(ast_matchers, 'TryExcept', None)) # type alias; pylint: disable=invalid-name

Expand Down Expand Up @@ -396,6 +397,22 @@ def _in_exception_handler(identifier, on_conflict):
'{$a for $a in $b}',
'set($b)',
category=_UNNECESSARY_COMPREHENSION_CATEGORY),
idiom_fixer(
'$a = os.path.split($b)[0]',
'$a = os.path.dirname($b)',
category=_OS_PATH_CATEGORY),
idiom_fixer(
'$a = os.path.split($b)[1]',
'$a = os.path.basename($b)',
category=_OS_PATH_CATEGORY),
idiom_fixer(
'$a, _ = os.path.split($b)',
'$a = os.path.dirname($b)',
category=_OS_PATH_CATEGORY),
idiom_fixer(
'_ , $a = os.path.split($b)',
'$a = os.path.basename($b)',
category=_OS_PATH_CATEGORY),
] + list(_MUTABLE_CONSTANT_FIXERS) + list(_LOGGING_FIXERS)

# TODO(b/152805392): + _NONE_RETURNS_FIXERS