[issue33762] temp file isn't IOBase

[Sergii Tkachenko]

Sergii Tkachenko <hi at sergii.org> added the comment:

Affected as well:
Python 3.8.0 (default, Nov  3 2019, 10:55:54)
[Clang 11.0.0 (clang-1100.0.33.8)] on darwin

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versions: +Python 3.8 -Python 3.7

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue33762>
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