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ZipFile.extractall fails if zipfile.Path object is created based on the ZipFile object · Issue #101566 · python/cpython · GitHub
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ZipFile.extractall fails if zipfile.Path object is created based on the ZipFile object #101566

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Description

Bug report

The following code works fine with Python 3.8 and 3.9 but starts failing with Python 3.10.

It seems that zipfile.Path creates an entry in the zipfile.ZipFile object that does not exist in the underlying file and therefore makes zipfile.ZipFile.extractall fail.

import zipfile import tempfile path = tempfile.mktemp() f = zipfile.ZipFile(path, "w") f.writestr("data/test.txt", "test1") f.writestr("data/test2.txt", "test2") f.close() dest = tempfile.mkdtemp() p = zipfile.ZipFile(path) src_zipfile_path = zipfile.Path(p, "data") p.extractall(dest)

Your environment

Working version:

(python39) [moggi@mars cloudfluid]$ python --version Python 3.9.16 (python39) [moggi@mars cloudfluid]$ python test.py (python39) [moggi@mars cloudfluid]$

Failing versions:

3.10.9:

(python_310_2) [moggi@mars cloudfluid]$ python --version Python 3.10.9 (python_310_2) [moggi@mars cloudfluid]$ python test.py Traceback (most recent call last): File "/home/moggi/devel/cloudfluid/test.py", line 15, in <module> p.extractall(dest) File "/home/moggi/devel/envs/python_310_2/lib/python3.10/zipfile.py", line 1645, in extractall self._extract_member(zipinfo, path, pwd) File "/home/moggi/devel/envs/python_310_2/lib/python3.10/zipfile.py", line 1667, in _extract_member member = self.getinfo(member) File "/home/moggi/devel/envs/python_310_2/lib/python3.10/zipfile.py", line 1441, in getinfo raise KeyError( KeyError: "There is no item named 'data/' in the archive"

and 3.11.0

(python311) [moggi@mars cloudfluid]$ python --version Python 3.11.0 (python311) [moggi@mars cloudfluid]$ python test.py Traceback (most recent call last): File "/home/moggi/devel/cloudfluid/test.py", line 15, in <module> p.extractall(dest) File "/home/moggi/devel/envs/python311/lib/python3.11/zipfile.py", line 1677, in extractall self._extract_member(zipinfo, path, pwd) File "/home/moggi/devel/envs/python311/lib/python3.11/zipfile.py", line 1699, in _extract_member member = self.getinfo(member) ^^^^^^^^^^^^^^^^^^^^ File "/home/moggi/devel/envs/python311/lib/python3.11/zipfile.py", line 1473, in getinfo raise KeyError( KeyError: "There is no item named 'data/' in the archive"

If this is the expected new behavior I think the documentation for 3.10 should mention this breaking change and the zipfile.Path documentation might need an entry about this problem.

The zipfile.Path object is used in the original code to check if the "data/" directory exists in the zip file.

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3.10only security fixes3.11only security fixes3.12only security fixesstdlibStandard Library Python modules in the Lib/ directorytype-bugAn unexpected behavior, bug, or error

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