tree 67aa4e6664fc5097cfe4efde2c0079af2b8b908a
parent 903c4b1a67689c4b8cc59113a56d58575cf7db8e
author Zac Medico <zmedico@gentoo.org> 1530765882 -0700
committer Zac Medico <zmedico@gentoo.org> 1531294859 -0700
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Add python2 compatible coroutine support (bug 660426)

For readability, it's desirable to make asynchronous code use
coroutines to avoid callbacks when possible. For python2 compatibility,
generators that yield Futures can be used to implement coroutines.

Add a compat_coroutine module which provides a @coroutine decorator
and a coroutine_return function that can be used to return a value
from a generator. The decorated function returns a Future which is
done when the generator is exhausted. Usage is very similar to asyncio
coroutine usage in python3.4 (see unit tests).

Bug: https://bugs.gentoo.org/660426