Antoine Pitrou dixit (2011-03-27, 17:59):
Can't you multiple inheritance instead?
class Base(tuple): ... def _method(self): return 5 ... __slots__ = () ... class C(Base, namedtuple('Point', 'x y')): ... __slots__ = () ... c = C(x=1, y=2) c C(x=1, y=2) c._method() 5 c.__dict__ Traceback (most recent call last): File "<stdin>", line 1, in <module> AttributeError: 'C' object has no attribute '__dict__' a, b = c a 1 b 2
You're right. But my idea was to make it simple and clean from the user point of view (without all those __slots__ etc.). Another approach could be a decorator transforming a given class into namedtuple with methods defined in that class: @namedtuple.from_class class MyRecord: # or e.g. class MyRecord(MyMixinWithSomeMethods): fields = 'username password' def __str__(self): return '{0.__class__}({0.username}, ...)'.format(self) Regards. *j