Add documentation to the dict implementation
Issue #27350.
diff --git a/Objects/dictobject.c b/Objects/dictobject.c
index be0d721..d86a0f3 100644
--- a/Objects/dictobject.c
+++ b/Objects/dictobject.c
@@ -593,7 +593,7 @@
Christian Tismer.
lookdict() is general-purpose, and may return DKIX_ERROR if (and only if) a
-comparison raises an exception (this was new in Python 2.5).
+comparison raises an exception.
lookdict_unicode() below is specialized to string keys, comparison of which can
never raise an exception; that function can never return DKIX_ERROR.
lookdict_unicode_nodummy is further specialized for string keys that cannot be