[Python-Dev] Return from generators in Python 3.2

Greg Ewing greg.ewing at canterbury.ac.nz
Sat Aug 28 02:19:03 CEST 2010


Ron Adam wrote:

> I wonder if "yield from" may run into pythons stack limit?

My current implementation wouldn't, because nested yield-froms
don't result in nested activations of Python frames. But...

> if __name__ == "__main__":
>     print(factoral(10000))   # <---- extra zero too!
> 
> 
> But if I add another zero, it begins to slow to a crawl as it uses swap 
> space. ;-)
> 
> How would a "yield from" version compare?

... there is still a Python frame in existence for each
active invocation of the generator, so it would probably
use about the same amount of memory.

-- 
Greg


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