Fixed #28249 -- Removed unnecessary dict.keys() calls.

iter(dict) is equivalent to iter(dict.keys()).

1 files changed, 1 insertions, 1 deletions

diff --git a/django/utils/functional.py b/django/utils/functional.py
index a1ab642e2d..05c17d6e64 100644
--- a/django/utils/functional.py
+++ b/django/utils/functional.py
@@ -82,7 +82,7 @@ def lazy(func, *resultclasses):
         def __prepare_class__(cls):
             for resultclass in resultclasses:
                 for type_ in resultclass.mro():
-                    for method_name in type_.__dict__.keys():
+                    for method_name in type_.__dict__:
                         # All __promise__ return the same wrapper method, they
                         # look up the correct implementation when called.
                         if hasattr(cls, method_name):