[issue19506] subprocess.communicate() should use a memoryview

[Charles-François Natali]

Charles-François Natali added the comment:

> Serhiy Storchaka added the comment:
>
> I don't know. But a function call have a cost.

I'm with Serhiy here.
Writing a performance optimization without benchmark is generally a
bad idea (I won't quote Knuth :-).

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue19506>
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