Error importing plugin "classes.contrib.mypy.classes_plugin" cannot import name 'union_items' from 'mypy.types'

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#481 opened on Mar 14, 2023 5 comments 4 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 3/5
Estimated time: 1-2 days
Newbie friendliness: 35/100

Issue type: Bug
Clarity: Mostly clear
Activity status: Stale
Tech stack: python
Domain: tooling

Research direction

Start by reproducing the Python 3.11 import from the issue and inspect classes/contrib/mypy/typeops/call_signatures.py, where the traceback shows the failing mypy.types import. Check the installed mypy compatibility and verify that importing classes.contrib.mypy.classes_plugin completes without errors.

Written by the indexing model from the issue text.

Description

bug

Bug report

What's wrong

I am hitting the error on a clean installation with python3.11 on MacOS.

Python 3.11.1 (main, Dec 12 2022, 14:17:59) [Clang 14.0.0 (clang-1400.0.29.202)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import classes.contrib.mypy.classes_plugin
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/Users/uname/PycharmProjects/sandbox/.venv/lib/python3.11/site-packages/classes/contrib/mypy/classes_plugin.py", line 33, in <module>
    from classes.contrib.mypy.features import associated_type, supports, typeclass
  File "/Users/uname/PycharmProjects/sandbox/.venv/lib/python3.11/site-packages/classes/contrib/mypy/features/typeclass.py", line 17, in <module>
    from classes.contrib.mypy.typeops import (
  File "/Users/uname/PycharmProjects/sandbox/.venv/lib/python3.11/site-packages/classes/contrib/mypy/typeops/call_signatures.py", line 9, in <module>
    from mypy.types import TypeVarType, union_items
ImportError: cannot import name 'union_items' from 'mypy.types' (/Users/uname/PycharmProjects/sandbox/.venv/lib/python3.11/site-packages/mypy/types.cpython-311-darwin.so)

How is that should be

No errors

System information

python version:
classes version:
mypy version:

Dominant language: Python
Stars: 730
Forks: 30
PR merge metrics: No merged PRs in 30d

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