big comment

AlexWaygood · Nov 17, 2023 · c2c65c6 · c2c65c6
1 parent ed53fcb
commit c2c65c6
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/Lib/typing.py b/Lib/typing.py
@@ -2734,6 +2734,11 @@ def __new__(cls, typename, bases, ns):
                     setattr(nm_tpl, key, val)
                 try:
                     set_name = type(val).__set_name__
+                # Emulate as much as possible the behaviour of type_new_set_names
+                # in Objects/typeobject.c: if any exception is raised
+                # while attempting to access a __set_name__ attribute,
+                # swallow the exception and move on.
+                # (We could possibly catch BaseException here, but that feels wrong.)
                 except Exception:
                     pass
                 else: