Issue #28556: Allow defining methods in NamedTuple class syntax (#362)
diff --git a/Lib/typing.py b/Lib/typing.py
index eb42c19..c9e3417 100644
--- a/Lib/typing.py
+++ b/Lib/typing.py
@@ -2000,6 +2000,10 @@
default_names=', '.join(defaults_dict.keys())))
nm_tpl.__new__.__defaults__ = tuple(defaults)
nm_tpl._field_defaults = defaults_dict
+ # update from user namespace without overriding special namedtuple attributes
+ for key in ns:
+ if not hasattr(nm_tpl, key):
+ setattr(nm_tpl, key, ns[key])
return nm_tpl