diff --git a/mypy/stubgenc.py b/mypy/stubgenc.py
index 01f03e41dd5f..abda52558ef5 100755
--- a/mypy/stubgenc.py
+++ b/mypy/stubgenc.py
@@ -852,7 +852,7 @@ def generate_class_stub(self, class_name: str, cls: type, output: list[str]) ->
         if sys.version_info >= (3, 10):
             annotations = inspect.get_annotations(cls)
         else:
-            annotations = getattr(cls, '__annotations__', {})
+            annotations = getattr(cls, "__annotations__", {})
 
         for attr, value in attrs:
             if attr == "__hash__" and value is None:
@@ -914,7 +914,7 @@ def generate_variable_stub(self, name: str, obj: object, output: list[str]) -> N
         if sys.version_info >= (3, 10):
             annotations = inspect.get_annotations(self.module)
         else:
-            annotations = getattr(self.module, '__annotations__', {})
+            annotations = getattr(self.module, "__annotations__", {})
 
         if name in annotations:
             type_str = self.strip_or_import(annotations[name])