python / python/mypy

Possible new meta issue: basedmypy features

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feature
Dominant language
Python
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Description

Feature

Recently, basedmypy (a typechecker based on mypy) deprecated itself. https://kotlinisland.github.io/basedmypy/based_features.html lists features basedmypy had that it considered above and beyond what mypy already offers. There is also https://kotlinisland.github.io/basedmypy/baseline.html and https://kotlinisland.github.io/basedmypy/based_inference.html, although those don't seem as useful to me. My "feature" proposal is that the good features from basedmypy applicable to mypy be ported over here.

Pitch

Some of those features seem useful, like unhelpful-string

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  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 basedmypy’s based_features.html and the linked deprecation context, then compare the listed features with mypy’s existing behavior. Focus first on determining whether unhelpful-string is applicable; the work is ready when individual features have defined scopes and acceptance criteria rather than remaining a broad meta proposal.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
tooling
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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