Anthony Sottile <asott...@umich.edu> added the comment:
one example is here: 
https://github.com/pre-commit/pre-commit/blob/bb6f1efe63c168d9393d520bd60e16c991a57059/pre_commit/store.py#L137-L139

where I would want cleanup in the exceptional case

another (related but different) closed-source use case involves creating a 
temporary directory that may be deleted and currently has to be guarded by:

    shutil.rmtree(..., ignore_errors=True)

(making `TemporaryDirectory` not useful since it crashes if the directory goes 
missing)

there's additionally the problem of readonly files on windows, and readonly 
directories elsewhere being undeletable without a custom rmtree but I think 
that's a different issue entirely -- 
https://github.com/pre-commit/pre-commit/blob/bb6f1efe63c168d9393d520bd60e16c991a57059/pre_commit/util.py#L250-L267

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<https://bugs.python.org/issue25024>
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