[3.13] gh-150484: Fix mock_open __exit__ with contextlib.ExitStack (GH-151829)#151861
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serhiy-storchaka merged 1 commit intoJun 21, 2026
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…ack (pythonGH-151829) mock_open's _exit_side_effect had a fixed 3-arg signature, but contextlib.ExitStack calls __exit__ with 4 args (self + 3 exc info). Use *args to accept any number of arguments. (cherry picked from commit 85fa295) Co-authored-by: Zang Peiyu <166481866+factnn@users.noreply.github.com>
This was referenced Jun 21, 2026
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mock_open's _exit_side_effect had a fixed 3-arg signature, but
contextlib.ExitStack calls exit with 4 args (self + 3 exc info).
Use *args to accept any number of arguments.
(cherry picked from commit 85fa295)
Co-authored-by: Zang Peiyu 166481866+factnn@users.noreply.github.com