Yury Selivanov added the comment:
> Oh, wait, I was confusing myself. This is that new module you guys created
> for type hints, and this is a new object with no installed base. (Right?)
No, you were right in your previous comment...
> Help me to understand here. You want to check in a patch adding 300 new
> lines of C code to the types module during beta, for a speed optimization,
> after we've already hit beta?
> While I like speedups as much as the next guy, I would be happier if this
> waited for 3.6.
This speedup will mostly affect code compiled with Cython. See the following
example:
@asyncio.coroutine
def coro():
yield from ...
Cython will compile "coro" into a function, that returns a generator-like
object. "asyncio.coroutine" will wrap this function, and, therefore, the
optimized by Cython generator-like object will be wrapped too (to provide an
__await__ method).
This patch provides a faster wrapper for such generator-like objects. Since the
whole point of using Cython is to squeeze as much performance as possible, I
think it's essential to have this optimization in 3.5 (or at least in 3.5.1 as
Guido suggested).
It's a lot of C code, I agree. I only can say that I did my best to write very
extensive unittests, and so I hope that it won't cause any trouble.
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