[issue35582] Argument Clinic: inline parsing code for functions with only positional parameters

STINNER Victor report at bugs.python.org
Fri Jan 11 12:19:15 EST 2019


STINNER Victor <vstinner at redhat.com> added the comment:

$ ./python -m timeit "iter(())"
Unpatched:  5000000 loops, best of 5: 82.8 nsec per loop
Patched:    5000000 loops, best of 5: 56.3 nsec per loop

That's quite significant. Oh, it's because you converted builtin_iter() from METH_VARARGS to METH_FASTCALL at the same time. Interesting.

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<https://bugs.python.org/issue35582>
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