Issue #25523: Backported a-to-an corrections.
diff --git a/Lib/test/test_dict.py b/Lib/test/test_dict.py
index a5685b9..1c63fc0 100644
--- a/Lib/test/test_dict.py
+++ b/Lib/test/test_dict.py
@@ -448,7 +448,7 @@
# (D) subclass defines __missing__ method returning a value
# (E) subclass defines __missing__ method raising RuntimeError
# (F) subclass sets __missing__ instance variable (no effect)
- # (G) subclass doesn't define __missing__ at a all
+ # (G) subclass doesn't define __missing__ at all
class D(dict):
def __missing__(self, key):
return 42