[issue42369] Reading ZipFile not thread-safe

[Kevin Mehall]

Kevin Mehall <km at kevinmehall.net> added the comment:

I think I found the root cause of this problem and proposed a fix in https://github.com/python/cpython/pull/26974

To monkey-patch this fix on existing versions of Python, I'm using:

class PatchedSharedFile(zipfile._SharedFile):
    def __init__(self, *args):
        super().__init__(*args)
        self.tell = lambda: self._pos
zipfile._SharedFile = PatchedSharedFile

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<https://bugs.python.org/issue42369>
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