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Tue Jan 20 17:56:06 CET 2009 · https://mail.python.org/pipermail/python-dev/2009-January/085247.html

Alexey G. Shpagin <python-3000 <at> udmvt.ru> writes:
> 
> Example will look like
>  g = (n for n in range(100) if n*n < 50 or else_break())

Please don't suggest any hack involving raising StopIteration as part of a
conditional statement in a generator expression. It might work today, but it
might as well break tomorrow as it's only a side-effect of the implementation,
not an official property of the language.

Regards

Antoine.

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Add a "while" clause to generator expressions