Fixed #30127 -- Deprecated name argument of cached_property().

1 files changed, 10 insertions, 2 deletions

diff --git a/django/utils/functional.py b/django/utils/functional.py
index 5f12aa08ff..ea46cff20f 100644
--- a/django/utils/functional.py
+++ b/django/utils/functional.py
@@ -1,6 +1,7 @@
 import copy
 import itertools
 import operator
+import warnings
 from functools import total_ordering, wraps
 
 
@@ -11,8 +12,6 @@ class cached_property:
 
     A cached property can be made out of an existing method:
     (e.g. ``url = cached_property(get_absolute_url)``).
-    The optional ``name`` argument is obsolete as of Python 3.6 and will be
-    deprecated in Django 4.0 (#30127).
     """
     name = None
 
@@ -24,6 +23,15 @@ class cached_property:
         )
 
     def __init__(self, func, name=None):
+        from django.utils.deprecation import RemovedInDjango50Warning
+
+        if name is not None:
+            warnings.warn(
+                "The name argument is deprecated as it's unnecessary as of "
+                "Python 3.6.",
+                RemovedInDjango50Warning,
+                stacklevel=2,
+            )
         self.real_func = func
         self.__doc__ = getattr(func, '__doc__')