Chuck Swiger wrote:
Historically, the Python optimizer wasn't capable of doing much, true, but the more recent versions of the optimizer can actually do some peephole optimizations like algorithmic simplification and constant folding:http://docs.python.org/whatsnew/other-lang.html#SECTION0001320000000000000000
A quick test with the built-in pystone mini-benchmark (taken out of the standard library so the optimization can be varied) yields [*]:
python without -O : 5802.36 python with -O : 5781.39 In both cases, the commands were: >>> import pystone >>> pystone.main(50000) on Python 2.5.1 (r251:54863, Jan 12 2008, 13:07:38) [GCC 4.2.1 20070719 [FreeBSD]] on freebsd7 I guess they still have to work on the optimizer :)[*] This is on a AMD Geode CPU (500 MHz), so don't compare it with something normal :)
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