[issue36807] IDLE doesn't call os.fsync()

[Terry J. Reedy]

Terry J. Reedy <tjreedy at udel.edu> added the comment:

This seems like a good idea.   I am assuming that open('somename', ...) always result in a file object with .fileno defined.

Although I am mostly not touching 2.7, this should be easy to do.  It will have to be done manually since iomenu was then IOBinding.

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versions: +Python 2.7 -Python 3.6

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<https://bugs.python.org/issue36807>
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