Gabriel Genellina added the comment: I've narrowed the problem to the usage of generator expressions. Generator expressions appear to be MUCH slower on 2.5 than on 2.4.
>python -m timeit "tuple([1 for _ in xrange(3)])" 2.4 -> 2.23us 2.5 -> 2.31us (a bit slower, but not so much) >python -m timeit "tuple(1 for _ in xrange(3))" 2.4 -> 3.32us 2.5 -> 8.03us (240% slower than 2.4) It appears to be a fixed cost, or startup cost, of the generator expression; differences get smaller when building large tuples (but always Python 2.5 runs slower than 2.4) ---------- components: -Library (Lib) nosy: +gagenellina __________________________________ Tracker <[EMAIL PROTECTED]> <http://bugs.python.org/issue1045> __________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
