newbie question: stdin, stdout, stderr?

[Skip Montanaro]

    Warren> How do you first USE, and second REDIRECT stdin, stdout, and
    Warren> stderr from within a Python program?

stdin, stdout and stderr are available as file objects in the sys module:

    >>> import sys
    >>> sys.stdin
    <open file '<stdin>', mode 'r' at 8111298>

You can redirect them by assigning an open file object to them:

    >>> sys.stderr = open("/tmp/errors", "a")

then when you're finished, reassign them using the __ versions:

    >>> sys.stderr = sys.__stderr__ 

Skip Montanaro | http://www.mojam.com/
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