from collections import namedtuple def LenientNamedTuple(name, fields): class Wrapper(namedtuple(name, fields)): __slots__ = () def __new__(cls, *args, **kwargs): kwargs = dict((k, v) for k, v in kwargs.items() if k in fields) return super(Wrapper, cls).__new__(cls, *args, **kwargs) return Wrapper class Foo(LenientNamedTuple('Foo', ['id', 'name', 'age'])): def __init__(self, *args, **kwargs): super(Foo, self).__init__()#*args, **kwargs) print(Foo(1, 2, 3)) print(Foo(id=1, name=2, age=3)) print(Foo(1, age=3, name=2)) print(Foo(id=1, name=2, age=3, spam=4)) print(Foo(1, 2, 3, spam=4)) print(Foo(1, 2, spam=4, age=3))