[issue31855] mock_open is not compatible with read(n) (and pickle.load)

[Rémi Lapeyre]

Change by Rémi Lapeyre <remi.lapeyre at henki.fr>:


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keywords: +patch, patch
pull_requests: +11098, 11099
stage:  -> patch review

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue31855>
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