[issue24159] Misleading TypeError when pickling bytes to a file opened as text

[Serhiy Storchaka]

Change by Serhiy Storchaka <storchaka+cpython at gmail.com>:


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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/issue24159>
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