Message242089
| Author |
llllllllll |
| Recipients |
barry, eric.smith, eric.snow, llllllllll, rhettinger |
| Date |
2015年04月27日.00:44:06 |
| SpamBayes Score |
-1.0 |
| Marked as misclassified |
Yes |
| Message-id |
<1430095448.12.0.181223845579.issue23910@psf.upfronthosting.co.za> |
| In-reply-to |
| Content |
I was unable to see a performance increase by playing with the itemgetter.__call__ code; however, updating the propery code seemed to show a small improvement. I think that for simple indexing the cost of checking if it is a sequence outways the faster dispatch (when using PySequence_GetItem). I can play with this further.
* default
[joejev@Sheila cpython]$ ./python -m timeit -s "from collections import namedtuple as n;a = n('n', 'a b c')(1, 2, 3)" "a.a"
10000000 loops, best of 3: 0.101 usec per loop
* patch
[joejev@Sheila cpython]$ ./python -m timeit -s "from collections import namedtuple as n;a = n('n', 'a b c')(1, 2, 3)" "a.a"
10000000 loops, best of 3: 0.0942 usec per loop |
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History
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| Date |
User |
Action |
Args |
| 2015年04月27日 00:44:08 | llllllllll | set | recipients:
+ llllllllll, barry, rhettinger, eric.smith, eric.snow |
| 2015年04月27日 00:44:08 | llllllllll | set | messageid: <1430095448.12.0.181223845579.issue23910@psf.upfronthosting.co.za> |
| 2015年04月27日 00:44:08 | llllllllll | link | issue23910 messages |
| 2015年04月27日 00:44:07 | llllllllll | create |
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