[docs] [issue15561] update subprocess docs to reference io.TextIOWrapper

[Andrew Svetlov]

Andrew Svetlov added the comment:

Hmm. As I can see in subprocess.py TextIOWrapper is applied to stdin also in non-buffered (write_through=True) mode. So input will be converted to use '\n' as well.

Can you reflect this fact in your patches?

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<http://bugs.python.org/issue15561>
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