[issue7523] add SOCK_NONBLOCK and SOCK_CLOEXEC to socket module

[R. David Murray]

R. David Murray <rdmurray at bitdance.com> added the comment:

It would be better to use test skipping: (eg: @unittest.SkipUnless
before the test class).

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nosy: +r.david.murray
priority:  -> normal
stage:  -> patch review

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue7523>
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