The update_idletasks solution was provided by Serhiy Storchaka.

now correctly ignores BrokenPipeError when the child process dies
before .communicate() is called in more (all?) circumstances.

BrokenPipeError when the child process dies before .communicate()
is called in more (all?) circumstances.

Clarifies what is returned when and that the methods are common between the two.

Patch by Alexander Liu as part of #22797.

Patch by Sean Rodman, test by Kaushik N.

Patch by Oren Milman.

I'm not sure how my previous merge commit got screwed up, hopefully this
one will do the right thing.

consistent name for values having multiple names.  Ex: signal.Signals(6)
now refers to itself as signal.SIGALRM rather than flipping between that
and signal.SIGIOT based on the interpreter's hash randomization seed.

This helps finish issue27167.

The deprecation warning is emitted if __float__ returns an instance of
a strict subclass of float.  In a future versions of Python this can
be an error.