gh-156078: Prevent ZipFile.mkdir() during an active write - #156079
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lpyu001 wants to merge 1 commit into
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gh-156078: Prevent ZipFile.mkdir() during an active write#156079lpyu001 wants to merge 1 commit into
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Fix `ZipFile.mkdir()` so that it raises `ValueError` when another writable member handle returned by `ZipFile.open(..., mode="w")` is still open.
aisk
approved these changes
Aug 20, 2026
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Fix
ZipFile.mkdir()so that it raisesValueErrorwhen another writable member handle returned byZipFile.open(..., mode="w")is still open.This issue also affects Python 3.13, 3.14, and 3.15
ZipFile.mkdir()corrupts archives during an active write #156078