[issue27598] Add SizedIterable to collections.abc and typing

[Ivan Levkivskyi]

Ivan Levkivskyi added the comment:

I submit a simple solution in line with __subclasshook__ of other ABCs.
I added several tests, it looks like it is doing everything right.

Please review.

----------
keywords: +patch
Added file: http://bugs.python.org/file44144/collection.diff

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue27598>
_______________________________________