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

[Roundup Robot]

Roundup Robot added the comment:

New changeset 44948f5bdc12 by Gregory P. Smith in branch '3.3':
Fixes issue #19506: Use a memoryview to avoid a data copy when piping data
http://hg.python.org/cpython/rev/44948f5bdc12

New changeset 5379bba2fb21 by Gregory P. Smith in branch 'default':
Fixes issue #19506: Use a memoryview to avoid a data copy when piping data
http://hg.python.org/cpython/rev/5379bba2fb21

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nosy: +python-dev

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