[Python-Dev] Patch #552433

[Guido van Rossum]

> When profiling, I found that Python, with iterators, spends a
> significant amount of time in allocating IndexError exceptions, so I
> thought that patch makes sense. There is also speed to be gained from
> accessing the tuple directly (thus bypassing the function call), but
> that may not be so relevant.

Ah, that helps.

[...]

> So it appears that a significant fraction of the exhausted containers are
> indeed tuples, justifying the special-casing.

OK, I'm convinced.

--Guido van Rossum (home page: http://www.python.org/~guido/)