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Created on 2019-08-22 01:02 by Seaky Lone, last changed 2022-04-11 14:59 by admin. This issue is now closed.
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| msg350147 - (view) | Author: Seaky Lone (Seaky Lone) | Date: 2019-08-22 01:02 | |
For example, I have the following code:
something = 'some thing'
string = f'some text {something.split(' ')}'
The second expression is thought to be invalid because it is regarded as two strings ['some text {something.split(', ')}']. I have to change either pair of '' to "" in order to make things work.
I think this should not be an invalid expression because the ' ' or any other expressions inside the {} should be independent of the outer ''.
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| msg350150 - (view) | Author: Eric V. Smith (eric.smith) *  |
Date: 2019-08-22 01:11 | |
The lexer sees an f-string:
f'some text {something.split('
next to a normal string:
')}'
The first of those is not a valid f-string because of the unmatched left brace, so it's an error.
I'm contemplating making the f-string parser smarter to be able to detect this, but it's a long way off.
For an explanation of why it works the way it does currently, see https://mail.python.org/archives/list/python-dev@python.org/message/BDZCXGRW5KTUOGMRT6OHH6S3UD4BV5ZV/ . This post also has an example similar to yours.
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:59:19 | admin | set | github: 82093 |
| 2019-08-22 01:11:12 | eric.smith | set | status: open -> closed type: behavior assignee: eric.smith nosy: + eric.smith messages: + msg350150 resolution: not a bug stage: resolved |
| 2019-08-22 01:02:04 | Seaky Lone | create | |