On Tue, 11 Apr 2006 19:15:18 +0200, Martin v. Löwis wrote: > Felipe Almeida Lessa wrote: >> I love benchmarks, so as I was testing the options, I saw something very >> strange: >> >> $ python2.4 -mtimeit 'x = range(100000); ' >> 100 loops, best of 3: 6.7 msec per loop >> $ python2.4 -mtimeit 'x = range(100000); del x[:]' >> 100 loops, best of 3: 6.35 msec per loop >> $ python2.4 -mtimeit 'x = range(100000); x[:] = []' >> 100 loops, best of 3: 6.36 msec per loop >> $ python2.4 -mtimeit 'x = range(100000); del x' >> 100 loops, best of 3: 6.46 msec per loop >> >> Why the first benchmark is the slowest? I don't get it... could someone >> test this, too? > > In the first benchmark, you need space for two lists: the old one and > the new one;
Er, what new list? I see only one list, x = range(100000), which is merely created then nothing done to it. Have I missed something? I understood Felipe to be asking, why does it take longer to just create a list, than it takes to create a list AND then do something to it? -- Steven. -- http://mail.python.org/mailman/listinfo/python-list