[issue20400] Add create_read_pipe_protocol/create_write_pipe_protocol to asyncio.SubprocessProtocol

[Roundup Robot]

Roundup Robot added the comment:

New changeset d7ac90c0463a by Victor Stinner in branch 'default':
Issue #20400: Merge Tulip into Python: add the new asyncio.subprocess module
http://hg.python.org/cpython/rev/d7ac90c0463a

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nosy: +python-dev

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