➜
This issue tracker has been migrated to GitHub,
and is currently read-only.
For more information,
see the GitHub FAQs in the Python's Developer Guide.
Created on 2014-12-01 11:18 by ardabro, last changed 2022-04-11 14:58 by admin. This issue is now closed.
| Messages (2) | |||
|---|---|---|---|
| msg231932 - (view) | Author: ardabro (ardabro) | Date: 2014-12-01 11:18 | |
built-in hash() function cannot be effectively used for integers due to weird behavior for -1 argument: >>> hash(0) 0 >>> hash(-1) -2 # !!!!! >>> hash(-2) -2 >>> hash(-3) -3 >>> |
|||
| msg231935 - (view) | Author: Eric V. Smith (eric.smith) *  |
Date: 2014-12-01 11:54 | |
hash() is not defined to be unique, so you're always going to have collisions. The behavior of hash() for int that you're seeing is not a bug. There's some background here: http://stackoverflow.com/questions/10130454/why-do-1-and-2-both-hash-to-2-in-python |
|||
| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:58:10 | admin | set | github: 67162 |
| 2014-12-01 11:54:13 | eric.smith | set | status: open -> closed components: + Interpreter Core, - Library (Lib) nosy: + eric.smith messages: + msg231935 resolution: not a bug stage: resolved |
| 2014-12-01 11:18:28 | ardabro | create | |