Improve several __hash__ methods (#8128)

stubs/SQLAlchemy/sqlalchemy/engine/row.pyi

@@ -19,7 +19,7 @@ class Row(BaseRow, Sequence[Any], metaclass=abc.ABCMeta):
     @property
     def index(self): ...
     def __contains__(self, key): ...
-    __hash__: Any
+    __hash__ = BaseRow.__hash__
     def __lt__(self, other): ...
     def __le__(self, other): ...
     def __ge__(self, other): ...

stubs/SQLAlchemy/sqlalchemy/orm/descriptor_props.pyi

@@ -1,4 +1,4 @@
-from typing import Any, Generic, TypeVar
+from typing import Any, ClassVar, Generic, TypeVar
 
 from ..sql.operators import ColumnOperators
 from ..util import memoized_property
@@ -37,7 +37,7 @@ class CompositeProperty(DescriptorProperty):
         def create_row_processor(self, query, procs, labels): ...
 
     class Comparator(PropComparator[_T], Generic[_T]):
-        __hash__: Any
+        __hash__: ClassVar[None]  # type: ignore[assignment]
         @memoized_property
         def clauses(self): ...
         def __clause_element__(self): ...

stubs/SQLAlchemy/sqlalchemy/orm/relationships.pyi

@@ -1,4 +1,4 @@
-from typing import Any, Generic, TypeVar
+from typing import Any, ClassVar, Generic, TypeVar
 
 from ..sql.operators import ColumnOperators
 from ..util import memoized_property
@@ -101,7 +101,7 @@ class RelationshipProperty(StrategizedProperty):
         def of_type(self, cls): ...
         def and_(self, *other): ...
         def in_(self, other) -> ColumnOperators[_T]: ...
-        __hash__: Any
+        __hash__: ClassVar[None]  # type: ignore[assignment]
         def __eq__(self, other): ...
         def any(self, criterion: Any | None = ..., **kwargs): ...
         def has(self, criterion: Any | None = ..., **kwargs): ...

stubs/SQLAlchemy/sqlalchemy/sql/base.pyi

@@ -1,6 +1,6 @@
 from _typeshed import Self
 from collections.abc import MutableMapping
-from typing import Any
+from typing import Any, ClassVar
 
 from .. import util
 from ..util import HasMemoized, hybridmethod, memoized_property
@@ -133,7 +133,7 @@ class ColumnCollection:
     def clear(self) -> None: ...
     def remove(self, column) -> None: ...
     def update(self, iter_) -> None: ...
-    __hash__: Any
+    __hash__: ClassVar[None]  # type: ignore[assignment]
     def add(self, column, key: Any | None = ...) -> None: ...
     def contains_column(self, col): ...
     def as_immutable(self): ...

stubs/SQLAlchemy/sqlalchemy/testing/pickleable.pyi

@@ -21,14 +21,14 @@ class Foo:
     stuff: Any
     moredata: Any
     def __init__(self, moredata, stuff: str = ...) -> None: ...
-    __hash__: Any
+    __hash__ = object.__hash__
     def __eq__(self, other): ...
 
 class Bar:
     x: Any
     y: Any
     def __init__(self, x, y) -> None: ...
-    __hash__: Any
+    __hash__ = object.__hash__
     def __eq__(self, other): ...
 
 class OldSchool: