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describe type of Popen streams (closes #17814) 

Patch more or less by Nikolaus Rath.
This commit is contained in:
Benjamin Peterson 2014-01-18 00:45:56 -05:00
parent c3cf97b4ea
commit 3d8814e1d3
1 changed files with 16 additions and 8 deletions
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22
Doc/library/subprocess.rst
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@ -705,21 +705,29 @@ The following attributes are also available:
.. attribute:: Popen.stdin
If the *stdin* argument was :data:`PIPE`, this attribute is a :term:`file
object` that provides input to the child process. Otherwise, it is ``None``.
If the *stdin* argument was :data:`PIPE`, this attribute is a writeable
stream object as returned by :func:`open`. If the *universal_newlines*
argument was ``True``, the stream is a text stream, otherwise it is a byte
stream. If the *stdin* argument was not :data:`PIPE`, this attribute is
``None``.
.. attribute:: Popen.stdout
If the *stdout* argument was :data:`PIPE`, this attribute is a :term:`file
object` that provides output from the child process. Otherwise, it is ``None``.
If the *stdout* argument was :data:`PIPE`, this attribute is a readable
stream object as returned by :func:`open`. Reading from the stream provides
output from the child process. If the *universal_newlines* argument was
``True``, the stream is a text stream, otherwise it is a byte stream. If the
*stdout* argument was not :data:`PIPE`, this attribute is ``None``.
.. attribute:: Popen.stderr
If the *stderr* argument was :data:`PIPE`, this attribute is a :term:`file
object` that provides error output from the child process. Otherwise, it is
``None``.
If the *stderr* argument was :data:`PIPE`, this attribute is a readable
stream object as returned by :func:`open`. Reading from the stream provides
error output from the child process. If the *universal_newlines* argument was
``True``, the stream is a text stream, otherwise it is a byte stream. If the
*stderr* argument was not :data:`PIPE`, this attribute is ``None``.
.. attribute:: Popen.pid