[issue23705] Speed-up deque.__contains__

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

Except one line with dubious spacing the patch LGTM.

----------
nosy: +serhiy.storchaka

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue23705>
_______________________________________