Type-check body of IntEnum subclass better

Open
#1,555 0 comments 0 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
45/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
python
Domain
devtools

Research direction

Start by reading PR #1535 and the linked comment from Jukka, then reproduce the shown IntEnum example in mypy. Trace how IntEnum subclass bodies are type-checked. Done means mypy reports the invalid string assignment in the example without regressing valid IntEnum definitions.

Written by the indexing model from the issue text.

Description

feature priority-1-normal topic-enum

This is a left-over task from PR #1535, in particular this comment from Jukka:

Here is an example of a thing that is still not quite right (no need to fix this now):

class X(IntEnum):
    x = 'x'   # mypy doesn't complain
Dominant language
Python
Stars
20.6k
Forks
3.3k
Avg merge
1d 18h
Merged PRs (30d)
54

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.

More from python/mypy

All issues in python/mypy

Similar issues

More Python issues

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.