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Wed Jan 3 14:54:15 EST 2018 · https://mail.python.org/pipermail/python-dev/2018-January/151570.html

02.01.18 22:31, Neil Schemenauer пише:
> Serhiy Storchaka <storchaka at gmail.com> wrote:
>> Currently 'break' and 'return' are never used inside 'finally'
>> clause in the stdlib.
> 
> See the _recv_bytes() function:
> 
> Lib/multiprocessing/connection.py: 316

Thank you Neil! I missed this case because ran only fast tests, without 
enabling network tests.

>> I would want to see a third-party code that uses them.
> 
> These are the only ones I found so far:
> 
> ../gevent/src/gevent/libev/corecffi.py: 147

I haven't found 'finally' clauses in 
https://github.com/gevent/gevent/blob/master/src/gevent/libev/corecffi.py. 
Perhaps this code was changed in recent versions.

In any case we now know that this combination is occurred (but very 
rarely) in the wild.

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[Python-Dev] 'continue'/'break'/'return' inside 'finally' clause