[issue22298] Lib/warnings.py _show_warning does not protect against being called with a file like object which is closed

[Antoine Pitrou]

Antoine Pitrou added the comment:

Oops, sorry for the bogus un-nosying.

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nosy: +Julius.Lehmann-Richter, terry.reedy

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue22298>
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