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Created on 2014-10-05 08:38 by pythoner, last changed 2022-04-11 14:58 by admin. This issue is now closed.
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| File name | Uploaded | Description | Edit | |
| sorting_func.py | pythoner, 2014-10-05 08:38 | Date Sorting | ||
| Messages (2) | |||
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| msg228543 - (view) | Author: Ankit Dhebar (pythoner) | Date: 2014-10-05 08:38 | |
code snippet
student_tuple = [ ('ykjsdf', 'A', 17, datetime.date(2014,10,15)), ('accjr', 'C', 11, datetime.date(2013,05,05)), ('dgekw', 'B', 5, datetime.date(1987,03,03)) ]
Output for the above code works as expected.
o/p : [('dgekw', 'B', 5, datetime.date(1987, 3, 3)), ('accjr', 'C', 11, datetime.date(2013, 5, 5)), ('ykjsdf', 'A', 17, datetime.date(2014, 10, 15))]
but when you make one of the above datetime.date as 'None' like below
student_tuple = [ ('ykjsdf', 'A', 17, datetime.date(2014,10,15)), ('accjr', 'C', 11, None), ('dgekw', 'B', 5, datetime.date(1987,03,03)) ]
o/p : TypeError: can't compare datetime.date to NoneType
In my opinion, the 'NoneType' should appear either in the beginning or towards the end after sorting is done.
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| msg228566 - (view) | Author: Eric V. Smith (eric.smith) *  |
Date: 2014-10-05 13:52 | |
You've identified the main problem: would None go first or last? Modify your key function to make the decision appropriate for you, returning either a very small or very large value for None, as appropriate. If you really want to see this behavior changed, you should have a concrete proposal and bring it up on the python-ideas mailing list. |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:58:08 | admin | set | github: 66746 |
| 2014-10-05 13:52:42 | eric.smith | set | status: open -> closed type: compile error -> behavior nosy: + eric.smith messages: + msg228566 resolution: not a bug stage: resolved |
| 2014-10-05 08:38:46 | pythoner | create | |