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Showing content from https://mail.python.org/pipermail/python-dev/2002-July/026273.html below:

[Python-Dev] Single- vs. Multi-pass iterability

[Python-Dev] Single- vs. Multi-pass iterability [Python-Dev] Single- vs. Multi-pass iterabilityGuido van Rossum guido@python.org
Wed, 10 Jul 2002 21:10:18 -0400 
> Then you couldn't do this:
> 
>     done = False
>     for line in f:
>         if not check(line):
>             break
>         process(line)
>     else:
>         done = True
> 
>     if not done:
>         for line in file:
>             another_process(line)

That's already broken, see SF bug 524804.

--Guido van Rossum (home page: http://www.python.org/~guido/)

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