[Python-Dev] Tricky way of of creating a generator via a comprehension expression (original) (raw)

Serhiy Storchaka storchaka at gmail.com
Thu Nov 23 09:45:03 EST 2017


23.11.17 16:30, Paul Moore пише:

Ok, cool. My main point still applies though - has anyone confirmed why a function scope was considered necessary at the time of the original implementation, but it's apparently not now? I'm pretty sure it was a deliberate choice, not an accident.

The implementation with an intermediate one-time function is just simpler. The one of purposes of Python 3 was simplifying the implementation, even at the cost of some performance penalty. I'm pretty sure the corner case with "yield" was just missed.



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