Closed
Description
Describe the bug
Mypy generates this error on the env.py
script:
Module has no attribute "config"; maybe "configure"?
Expected behavior
No error message on env.py
script generated by the alembic init
command.
To Reproduce
$ alembic init alembic
Creating directory /project/alembic ... done
Creating directory /project/alembic/versions ... done
Generating /project/alembic.ini ... done
Generating /project/alembic/env.py ... done
Generating /project/alembic/script.py.mako ... done
Generating /project/alembic/README ... done
Please edit configuration/connection/logging settings in '/project/alembic.ini' before proceeding.
$ mypy .
alembic/env.py:10: error: Module has no attribute "config"; maybe "configure"?
Found 1 error in 1 file (checked 1 source file)
$
Error
alembic/env.py:10: error: Module has no attribute "config"; maybe "configure"?
Versions.
- OS: Ubuntu 20.04
- Python: 3.8.10
- Alembic: 1.7.0 (also 1.7.1)
- SQLAlchemy: 1.4.23
- Database: None
- DBAPI: ?
- mypy: 0.910
Additional context
I worked around the problem by telling mypy not to check the config attribute on line 10 of env.py
.
config = context.config # type: ignore
It's just a guess, but I wondered if this type hint is confusing Mypy.
config: "Config" = None # type:ignore[assignment]
Have a nice day!
Thanks for sharing the project, and thanks for adding type hints.