Anthony Baire added the comment:

The patch is fine, but it is hard to rely on it to prevent bugs from happening 
because that requires cooperation from all modules registering signal handlers.

Anyway it facilitates reusing code that was not written for an event-driven 
context (and many will do that through .run_in_executor()). If the patch is 
accepted, it would be wise to write a note in .run_in_executor()'s doc saying 
that asyncio uses SA_RESTART by default in all its handler and that EINTR is 
prevented *as long as* no other handlers are registered elsewhere.

----------
nosy: +aba

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<http://bugs.python.org/issue19850>
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