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Thu Jan 22 10:06:24 CET 2009 · https://mail.python.org/pipermail/python-dev/2009-January/085309.html

Terry Reedy wrote:
> Cameron Simpson wrote:
>>
>> Back at uni we had to implement a small language in our compilers class
>> and the lecturer had specified a proper generic while loop, thus:
>>
>>   loop:
>>     suite
>>   while invariant
>>     suite
>>   endloop
> 
> In Python, that is spelled
> 
> while True:
>   suite
>   if not invariant: break
>   suite

Indeed. This is the well known "loop and a half" problem.

Eric.

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Add a "while" clause to generator expressions