➜
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 2016-02-03 11:39 by deleted0524, last changed 2022-04-11 14:58 by admin. This issue is now closed.
| Messages (4) | |||
|---|---|---|---|
| msg259473 - (view) | Author: deleted0524 (deleted0524) | Date: 2016-02-03 11:39 | |
In Python 2.7.6 and 3.2.3:
>>> "{ {{ 0} }}".format(**{' {{ 0} }': 'X'})
'X'
In Python 3.4.3:
>>> "{ {{ 0} }}".format(**{' {{ 0} }': 'X'})
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ValueError: unexpected '{' in field name
I think the problem is that PEP 3101 is under specified w.r.t. to non identifier characters in format units.
|
|||
| msg259478 - (view) | Author: Eric V. Smith (eric.smith) *  |
Date: 2016-02-03 12:29 | |
Hi, Mark. Yes, PEP 3101 is very much under-specified in this area. I tried to avoid the same mistake in PEP 498, although of course that's a different problem area. I don't recall why this particular case broke between 3.2.3 and 3.4.3. I'll try and track it down. I'm sure we were trying to "fix" some other edge condition. FWIW, in 3.4.3 this also fails, as expected: >>> "{ {{ 0} }}".format_map({' {{ 0} }': 'X'}) Can you try it in 3.2.3? I expect it to work, but you never know. |
|||
| msg411533 - (view) | Author: Irit Katriel (iritkatriel) * |
Date: 2022-01-25 00:03 | |
Reproduced on 3.11. |
|||
| msg412232 - (view) | Author: Eric V. Smith (eric.smith) * |
Date: 2022-02-01 01:28 | |
I'm going to close this issue. The behavior might be inconsistent with 2.7, but I don't think that matters any more. |
|||
| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:58:27 | admin | set | github: 70464 |
| 2022-02-01 01:28:46 | eric.smith | set | status: open -> closed resolution: wont fix messages: + msg412232 stage: resolved |
| 2022-01-25 00:03:49 | iritkatriel | set | nosy:
+ iritkatriel messages: + msg411533 versions: + Python 3.9, Python 3.10, Python 3.11, - Python 3.4 |
| 2016-02-03 12:29:20 | eric.smith | set | messages: + msg259478 |
| 2016-02-03 12:23:51 | eric.smith | set | nosy:
+ eric.smith |
| 2016-02-03 11:39:10 | deleted0524 | create | |