[Python-Dev] Ridiculously minor tweaks?
Guido van Rossum
Tue, 11 Mar 2003 21:11:12 -0500
> There are many places in the standard library where some code either
> iterates over a literal list or checks for membership in a literal
> list. I'm curious if it would be considered productive and useful
> to go through and change those places to iterate over/check for
> membership in literal tuples instead fo lists. The tuple, I think,
> more closely reflects the read-only literal nature of the code and
> is slightly faster to boot.
I bet you can't prove the speed-up.
Tuples are for heterogeneous data, list are for homogeneous data.
Tuples are *not* read-only lists.
Tuples require extra care in case the number of elements shrinks to 1.
--Guido van Rossum (home page: http://www.python.org/~guido/)