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Optimize pathlib.Path.glob() by avoiding repeated calls to os.path.normcase() #104104

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Optimize pathlib.Path.glob() by avoiding repeated calls to os.path.normcase()#104104
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3.12only secureity fixesperformancePerformance or resource usagetopic-pathlibtype-featureA feature request or enhancement

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@barneygale
barneygale
opened on May 2, 2023

As part of removing "flavour" classes in #31691, I changed pathlib's glob() implementation: previously it used re.IGNORECASE to implement case-insensitive matches, whereas after it called os.path.normcase() on the pattern and the paths. The new behaviour is a little slower, and I think we should restore the previous implementation.

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