➜
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 2014-01-28 09:27 by Chen.ZHANG, last changed 2022-04-11 14:57 by admin. This issue is now closed.
| Messages (3) | |||
|---|---|---|---|
| msg209519 - (view) | Author: Chen ZHANG (Chen.ZHANG) | Date: 2014-01-28 09:27 | |
Since the usage of isinstance could be "isinstance(1, (int, float))", I'm wondering why it doesn't accept "[int, float]", if I do so, it would raise TypeError saying "arg 2 must be a type or tuple of types". What's the difference in effect between a tuple and a list here? (I know a tuple is immutable, but I think it doesn't matter when passing some other types of non-string iterables(yielding strings), am I right? |
|||
| msg209521 - (view) | Author: Mark Dickinson (mark.dickinson) *  |
Date: 2014-01-28 09:35 | |
See related discussion on python-ideas here: https://mail.python.org/pipermail/python-ideas/2011-July/010610.html |
|||
| msg382546 - (view) | Author: Irit Katriel (iritkatriel) * |
Date: 2020-12-04 23:27 | |
Interesting discussion, and the reason seems to be here: https://mail.python.org/pipermail/python-ideas/2011-July/010642.html Lists need to be checked for cycles, tuples don't. |
|||
| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:57:57 | admin | set | github: 64614 |
| 2020-12-04 23:27:51 | iritkatriel | set | status: open -> closed nosy: + iritkatriel messages: + msg382546 resolution: rejected stage: resolved |
| 2014-02-15 15:49:04 | ezio.melotti | set | nosy:
+ ezio.melotti |
| 2014-01-30 13:24:08 | jwilk | set | nosy:
+ jwilk |
| 2014-01-28 09:35:21 | mark.dickinson | set | nosy:
+ mark.dickinson messages: + msg209521 |
| 2014-01-28 09:27:54 | Chen.ZHANG | create | |