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Showing content from http://mail.python.org/pipermail/python-list/2005-September/349152.html below:

read stdout/stderr without blocking

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>         ready = select.select(tocheck, [], [], 0.25) ##continues after 0.25s
>         for file in ready[0]:
>             try:
>                 text = os.read(file, 1024)

How do you know here, that you should read 1024 characters?
What will happen when output is shorter?

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