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from sqlalchemy import Column
from sqlalchemy import ForeignKey
from sqlalchemy import Integer
from sqlalchemy.ext.orderinglist import ordering_list
from sqlalchemy.orm import registry
from sqlalchemy.orm import relationship
mapper_registry: registry = registry()
@mapper_registry.mapped
class A:
__tablename__ = "a"
id = Column(Integer, primary_key=True)
# EXPECTED: Can't infer type from ORM mapped expression assigned to attribute 'parents'; please specify a Python type or Mapped[<python type>] on the left hand side. # noqa
parents = relationship("A", collection_class=ordering_list("ordering"))
parent_id = Column(Integer, ForeignKey("a.id"))
ordering = Column(Integer)
a1 = A(id=5, ordering=10)
# EXPECTED_MYPY: Argument "parents" to "A" has incompatible type "List[A]"; expected "Mapped[Any]" # noqa
a2 = A(parents=[a1])
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