Overriding sys.stdout

[John Q. Public]

I would like to be able to take a snapshot of stdout while a script is
running, but still allow stdout to be written to the terminal.  My
current, working, solution is to hack IDLE but I would like a generic
solution so we would not be bound to a specific IDE.  I would like to
use PythonWin on NT, if I can, or do the journaling in batch mode.

My plan is to implement a class/module/whatever that I can used to
overwrite sys.stdout.  This class/module/whatever would write data to a
file and send it to the old stdout.  My mail questions are these:

    Does such a class/module/whatever exist?
    If not, does anyone have an idea where I can start for info?  As a
last resort, I will start wading through IDLE and PythonWin, but I would
like some ideas first.

Thanks!

Jonathan Polley
jwpolley(a)collins(d)rockwell(d)com