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From: Ian Kelly <ian.g.kelly@gmail.com>
Date: Mon, 24 Jun 2013 22:50:59 -0600
Subject: Re: Is this PEP-able? fwhile
To: Python <python-list@python.org>
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Xref: csiph.com comp.lang.python:49127

On Mon, Jun 24, 2013 at 6:41 PM, wu wei <wuwei23@gmail.com> wrote:
> It's still possible by raising a StopIteration within the condition
> function:
>
>     def is_part_of_header(x):
>         if header_condition:
>             return True
>         else:
>             raise StopIteration

Which is basically just taking the break and moving it to somewhere
else in the code, and meanwhile rendering the is_part_of_header
function non-reusable.