Andrei Kulakov <andrei....@gmail.com> added the comment:
In my testing on 3.9.1 and the current `main` branch, I found:
- I can reproduce this issue if a function or a lambda or class with a method
are defined.
- There is no error if a class is defined with no methods. (I'm not sure why).
The test code runs without errors if the following check is done before seeking
the `fp` in `close()`:
if not self.fp.closed:
here:
https://github.com/python/cpython/blob/main/Lib/zipfile.py#L1823
The fix also requires adding `closed` property to `zipfile._Tellable`
With these two small changes, all test_zipfile tests pass.
I'm not sure this is the proper fix, because this is a complex issue..
I will go ahead and put up a PR if this seems like a good approach.
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nosy: +andrei.avk
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<https://bugs.python.org/issue37773>
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