Add support back for Python3.8

Author: mvanderlee

.gitignore

@@ -95,6 +95,9 @@ venv.bak/
 # Rope project settings
 .ropeproject
 
+# VSCode project settings
+.vscode
+
 # mkdocs documentation
 /site
 

.pre-commit-config.yaml

@@ -3,6 +3,7 @@ repos:
   rev: v3.3.1
   hooks:
   - id: pyupgrade
+    # I've kept it on py3.7 so that it doesn't replace `Dict` with `dict`
     args: ["--py37-plus"]
 - repo: https://github.com/python/black
   rev: 23.1.0

marshmallow_dataclass/__init__.py

@@ -43,7 +43,7 @@ class User:
 import warnings
 from enum import Enum
 from functools import lru_cache, partial
-from typing import Annotated, Any, Callable, Dict, FrozenSet, List, Mapping
+from typing import Any, Callable, Dict, FrozenSet, List, Mapping
 from typing import NewType as typing_NewType
 from typing import (
     Any,
@@ -72,6 +72,11 @@ class User:
 
 from marshmallow_dataclass.lazy_class_attribute import lazy_class_attribute
 
+if sys.version_info >= (3, 9):
+    from typing import Annotated
+else:
+    from typing_extensions import Annotated
+
 if sys.version_info >= (3, 11):
     from typing import dataclass_transform
 else:

marshmallow_dataclass/typing.py

@@ -1,7 +1,12 @@
-from typing import Annotated
+import sys
 
 import marshmallow.fields
 
+if sys.version_info >= (3, 9):
+    from typing import Annotated
+else:
+    from typing_extensions import Annotated
+
 Url = Annotated[str, marshmallow.fields.Url]
 Email = Annotated[str, marshmallow.fields.Email]
 

setup.py

@@ -1,4 +1,4 @@
-from setuptools import setup, find_packages
+from setuptools import find_packages, setup
 
 VERSION = "9.0.0"