Message169812
The int=int still makes no difference, but if the second argument is set to random.random, we get a big speedup, regardless of whether the third argument is there:
without int=int:
amoura@amoura-laptop:~/cpython$ time ./python -c "import random; lst=list(range(1000000)); random.shuffle(lst,random.random); print (len(lst))"
1000000
real 0m7.082s
user 0m6.952s
sys 0m0.116s
With int=int:
amoura@amoura-laptop:~/cpython$ time ./python -c "import random; lst=list(range(1000000)); random.shuffle(lst,random.random); print (len(lst))"
1000000
real 0m7.281s
user 0m7.156s
sys 0m0.100s
Without second argument:
amoura@amoura-laptop:~/cpython$ time ./python -c "import random; lst=list(range(1000000)); random.shuffle(lst); print (len(lst))"
1000000
real 0m13.783s
user 0m13.609s
sys 0m0.108s
This could be because of the many tests of whether the 2nd argument is None in the loop. |
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Date |
User |
Action |
Args |
2012-09-03 22:55:56 | eng793 | set | recipients:
+ eng793, rhettinger, r.david.murray, serhiy.storchaka |
2012-09-03 22:55:56 | eng793 | set | messageid: <1346712956.3.0.326893344799.issue15837@psf.upfronthosting.co.za> |
2012-09-03 22:55:55 | eng793 | link | issue15837 messages |
2012-09-03 22:55:55 | eng793 | create | |
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