Message385769
| Author | abo |
|---|---|
| Recipients | abo |
| Date | 2021-01-27.13:07:13 |
| SpamBayes Score | -1.0 |
| Marked as misclassified | Yes |
| Message-id | <1611752833.52.0.275617605532.issue43040@roundup.psfhosted.org> |
| In-reply-to |
| Content | |
|---|---|
I encountered a very significant slowdown migrating some code from python2.7 to python3.9 that I tracked down to randrange() being slow. After digging I noticed that _randbelow_with_getrandbits() calls getrandbits() 2x as many times, and asks for one more bit each time, than is actually required if the range requested is a power of 2. I have a GitHub PR on the way to fix this... |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2021-01-27 13:07:13 | abo | set | recipients: + abo |
| 2021-01-27 13:07:13 | abo | set | messageid: <1611752833.52.0.275617605532.issue43040@roundup.psfhosted.org> |
| 2021-01-27 13:07:13 | abo | link | issue43040 messages |
| 2021-01-27 13:07:13 | abo | create | |