python / python/mypy

Improve t-string support by checking formats, etc

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#20,903 2 comments 0 reactions 0 assignees View on GitHub

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feature
Dominant language
Python
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Description

Feature

PR #20850 added support for t-strings. It would be nice to also check format specifiers, substitutions etc. There is already similar logic in checkstrformat.py (added for f-string). It should be possible to simply apply the same or similar logic to t-strings.

See original comment.

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reviewing the t-string support added in PR #20850 and the existing format-checking logic in checkstrformat.py. Compare how f-string format specifiers and substitutions are checked, then determine the equivalent coverage needed for t-strings. Done means t-strings receive the requested format and substitution validation without regressing existing behavior.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
compilers
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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