[Python-ideas] Is this PEP-able? for X in ListY while conditionZ:

[Alexander Belopolsky]

I can do this with generators now:

>>> def stop():
...    raise StopIteration
...
>>> list(i for i in range(10) if i < 3 or stop())
[0, 1, 2]

Can't the same be allowed in compehensions?
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