♻️ Import Literal from the typing module directly (#1699)

import Literal from typing now that Python 3.8 is dropped

Author: svlandeg

sqlmodel/main.py

@@ -14,6 +14,7 @@
     Any,
     Callable,
     ClassVar,
+    Literal,
     Optional,
     TypeVar,
     Union,
@@ -48,7 +49,7 @@
 from sqlalchemy.orm.instrumentation import is_instrumented
 from sqlalchemy.sql.schema import MetaData
 from sqlalchemy.sql.sqltypes import LargeBinary, Time, Uuid
-from typing_extensions import Literal, TypeAlias, deprecated, get_origin
+from typing_extensions import TypeAlias, deprecated, get_origin
 
 from ._compat import (  # type: ignore[attr-defined]
     PYDANTIC_MINOR_VERSION,

sqlmodel/sql/expression.py

@@ -1,6 +1,7 @@
 from collections.abc import Iterable, Mapping, Sequence
 from typing import (
     Any,
+    Literal,
     Optional,
     TypeVar,
     Union,
@@ -34,7 +35,6 @@
     UnaryExpression,
 )
 from sqlalchemy.sql.type_api import TypeEngine
-from typing_extensions import Literal
 
 from ._expression_select_cls import Select as Select
 from ._expression_select_cls import SelectOfScalar as SelectOfScalar

tests/test_pydantic/test_field.py

@@ -1,10 +1,9 @@
 from decimal import Decimal
-from typing import Optional, Union
+from typing import Literal, Optional, Union
 
 import pytest
 from pydantic import ValidationError
 from sqlmodel import Field, SQLModel
-from typing_extensions import Literal
 
 
 def test_decimal():