[issue18885] handle EINTR in the stdlib

[Charles-François Natali]

Charles-François Natali added the comment:

> Well this is wishing thinking, since by returning an empty list you
> force the user to handle EINTR - just in a different way.

I know that returning an empty list changes the semantics: I just
think that's better - or not as bad - than the current possibility of
having any single piece of code possibly die upon EINTR.

If you want to implement retry with timeout re-computation, I'm not
the one to who must be convinced :-)

(BTW, if we go this way, then time.sleep() should probably also be
fixed to retry upon EINTR).

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<http://bugs.python.org/issue18885>
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