[issue9572] IOError or OSError in test_multiprocessing

[Florent Xicluna]

Florent Xicluna <florent.xicluna at gmail.com> added the comment:

Łukasz,

_closing is not necessary on FileIO instances. The class already declares an __exit__ method which takes care of closing file.

>>> import io
>>> f = io.FileIO('/tmp/test_closing', 'wb')
>>> f.closed
False

>>> f.__exit__()
>>> f.closed
True

Since both IOError and OSError are direct subclasses of EnvironmentError, we can use this in the except clause.

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