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Created on 2010-03-02 14:26 by djc, last changed 2022-04-11 14:56 by admin. This issue is now closed.
| Files | ||||
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| File name | Uploaded | Description | Edit | |
| issue-8039.patch | meador.inge, 2010-03-07 04:53 | patch against 2.7 trunk | ||
| Messages (4) | |||
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| msg100294 - (view) | Author: Dirkjan Ochtman (djc) *  |
Date: 2010-03-02 14:26 | |
So http://docs.python.org/reference/expressions.html doesn't currently mention the ternary operator as far as I can see. Maybe this is trivial, but it would be nice to know where it fits into the hierarchy. (I.e., my co-worker just came up to me asking when he needed the parentheses around the entire expression and when he didn't, and I couldn't give him a good answer.) |
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| msg100341 - (view) | Author: Eric V. Smith (eric.smith) * |
Date: 2010-03-03 13:25 | |
For what it's worth, these are properly called "Conditional Expressions". See PEP 308 for the gory details, including figuring out what the precedence is. It was news to me that the allowed syntax is slightly different in 2.x and 3.x. |
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| msg100562 - (view) | Author: Meador Inge (meador.inge) * |
Date: 2010-03-07 04:53 | |
It seems to me from the grammar (http://docs.python.org/reference/expressions.html#grammar-token-conditional_expression) that the precedence for conditional expressions fall in between that of 'lambda' and 'or' expressions. |
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| msg100611 - (view) | Author: Georg Brandl (georg.brandl) * |
Date: 2010-03-07 21:13 | |
if-else actually was already documented, under "boolean expressions". It was merely missing from the precendence table. I've now given it its own section, to make it stand out a bit better. See r78772. |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:56:58 | admin | set | github: 52287 |
| 2010-03-07 21:13:23 | georg.brandl | set | status: open -> closed resolution: fixed messages: + msg100611 |
| 2010-03-07 04:53:00 | meador.inge | set | files:
+ issue-8039.patch versions: + Python 2.7 nosy: + meador.inge messages: + msg100562 keywords: + patch |
| 2010-03-03 13:25:21 | eric.smith | set | nosy:
+ eric.smith messages: + msg100341 |
| 2010-03-02 14:31:42 | djc | set | nosy:
+ ezio.melotti |
| 2010-03-02 14:26:03 | djc | create | |