➜
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 2021-12-02 16:39 by M1kE, last changed 2022-04-11 14:59 by admin. This issue is now closed.
| Messages (3) | |||
|---|---|---|---|
| msg407537 - (view) | Author: Mukesh (M1kE) | Date: 2021-12-02 16:39 | |
I've tried various methods to multiply some numbers but every time I get an unsatisfying result when I try to evaluate 48*1.2 or 41*1.2 or 51*1.4 etc. For example if I run
import math
NUM3 = eval(input("Your Input: "))
print(NUM3)
Output:
Your Input: 51*1.4
71.39999999999999
Now it should give me a straight 71.4 but instead it's giving 71.39999999999999
It's not an issue with the version of python that I'm using cause I've already tried it on various versions.
|
|||
| msg407538 - (view) | Author: Eric V. Smith (eric.smith) *  |
Date: 2021-12-02 16:43 | |
This isn't a bug, it's a function of the IEEE-754 double precision floating point type that python uses. See: https://docs.python.org/3/tutorial/floatingpoint.html You might want to consider the decimal module, although that will also have limitations. |
|||
| msg407563 - (view) | Author: Steven D'Aprano (steven.daprano) * |
Date: 2021-12-03 00:25 | |
https://docs.python.org/3/faq/design.html#why-am-i-getting-strange-results-with-simple-arithmetic-operations |
|||
| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:59:53 | admin | set | github: 90124 |
| 2021-12-03 00:25:29 | steven.daprano | set | nosy:
+ steven.daprano messages: + msg407563 |
| 2021-12-02 16:43:04 | eric.smith | set | status: open -> closed nosy: + eric.smith messages: + msg407538 resolution: not a bug stage: resolved |
| 2021-12-02 16:39:50 | M1kE | create | |