[issue5552] With invalid FD, os.device_encoding() returns None under Linux but raises an error under Windows

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

This may be related to the following lines in posixmodule.c:

if (!_PyVerify_fd(fd))
	return posix_error();

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nosy: +krisvale

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<http://bugs.python.org/issue5552>
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