Skip to content

INTERNAL ERROR triggered by broken typing #219

Open
@aberres

Description

@aberres

Describe the bug
Exception with INTERNAL ERROR: maximum semantic analysis iteration count reached

Expected behavior

A message like error: Name "Address" is not defined [name-defined]

To Reproduce
Type check the code below.

Obviously, there is not class Address. When removing the base class, the error is emitted as expected. Stumbled upon this problem when having a typo in a relation.

from sqlalchemy import Column, Integer, String
from sqlalchemy.ext.declarative import declarative_base


def test_soft():
    Base = declarative_base()

    class User(Base):
        __tablename__ = "user"

        id = Column(Integer, primary_key=True)
        addresses: list[Address]

Error

Deferral trace:
    [...]
    m2p.utils.tests.test_softdelete:12
    m2p.utils.tests.test_softdelete:12
    m2p.utils.tests.test_softdelete:12
    m2p.utils.tests.test_softdelete:12
    m2p.utils.tests.test_softdelete:12
    m2p.utils.tests.test_softdelete:12
    m2p.utils.tests.test_softdelete:12
test_softdelete.py: error: INTERNAL ERROR: maximum semantic analysis iteration count reached

Versions.

  • Python: 3.10
  • SQLAlchemy: 1.4.39
  • mypy: 0.961
  • SQLAlchemy2-stubs: 0.0.2a24

Metadata

Metadata

Assignees

No one assigned

    Labels

    bugSomething isn't workingmypy pluginsomething that has to do with the sqlalchemy mypy plugin

    Type

    No type

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions