@classproperty decorator has moved in Django 3.1

django-stubs/forms/forms.pyi

@@ -70,7 +70,12 @@ class BaseForm:
     def visible_fields(self): ...
     def get_initial_for_field(self, field: Field, field_name: str) -> Any: ...
     def _html_output(
-        self, normal_row: str, error_row: str, row_ender: str, help_text_html: str, errors_on_separate_row: bool,
+        self,
+        normal_row: str,
+        error_row: str,
+        row_ender: str,
+        help_text_html: str,
+        errors_on_separate_row: bool,
     ) -> SafeText: ...
 
 class Form(BaseForm):

django-stubs/utils/decorators.pyi

@@ -1,5 +1,6 @@
-from typing import Any, Callable, Iterable, Optional, Type, Union, TypeVar
+from typing import Any, Callable, Iterable, Optional, Type, TypeVar, Union
 
+import django
 from django.utils.deprecation import MiddlewareMixin
 from django.views.generic.base import View
 
@@ -13,8 +14,9 @@ def decorator_from_middleware(middleware_class: type) -> Callable: ...
 def available_attrs(fn: Callable): ...
 def make_middleware_decorator(middleware_class: Type[MiddlewareMixin]) -> Callable: ...
 
-class classproperty:
-    fget: Optional[Callable] = ...
-    def __init__(self, method: Optional[Callable] = ...) -> None: ...
-    def __get__(self, instance: Any, cls: Optional[type] = ...) -> Any: ...
-    def getter(self, method: Callable) -> classproperty: ...
+if django.VERSION < (3, 1):
+    class classproperty:
+        fget: Optional[Callable] = ...
+        def __init__(self, method: Optional[Callable] = ...) -> None: ...
+        def __get__(self, instance: Any, cls: Optional[type] = ...) -> Any: ...
+        def getter(self, method: Callable) -> classproperty: ...

django-stubs/utils/functional.pyi

@@ -1,6 +1,19 @@
-from typing import Any, Callable, Dict, List, Optional, Tuple, Type, Union, TypeVar, Generic, overload
 from functools import wraps as wraps  # noqa: F401
+from typing import (
+    Any,
+    Callable,
+    Dict,
+    Generic,
+    List,
+    Optional,
+    Tuple,
+    Type,
+    TypeVar,
+    Union,
+    overload,
+)
 
+import django
 from django.db.models.base import Model
 
 def curry(_curried_func: Any, *args: Any, **kwargs: Any): ...
@@ -61,3 +74,10 @@ _PartitionMember = TypeVar("_PartitionMember")
 def partition(
     predicate: Callable, values: List[_PartitionMember]
 ) -> Tuple[List[_PartitionMember], List[_PartitionMember]]: ...
+
+if django.VERSION >= (3, 1):
+    class classproperty:
+        fget: Optional[Callable] = ...
+        def __init__(self, method: Optional[Callable] = ...) -> None: ...
+        def __get__(self, instance: Any, cls: Optional[type] = ...) -> Any: ...
+        def getter(self, method: Callable) -> classproperty: ...