[issue16624] subprocess.check_output should allow specifying stdin as a string

[Serhiy Storchaka]

Serhiy Storchaka added the comment:

I think that it will be better not introduce a new argument, but reuse stdin. Just allow io.BytesIO (or perhaps even any file object) be specified as stdin.

The change will be straightforward:

if isinstance(stdin, io.BytesIO):
    inputdata = stdin.read()
    stdin = PIPE

Or more general:

if not(stdin is None or stdin in (PIPE, DEVNULL) or isinstance(stdin, int)):
    try:
        stdin.fileno()
    except (AttributeError, UnsupportedOperation, OSError):
        inputdata = stdin.read()
        stdin = PIPE

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue16624>
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