class Cat:
def __init__(self, name):
self.name = name
@classmethod
def from_number(cls, num):
return cls('Number ' + str(num))
class BigCat(Cat):
def __init__(self, name):
self.name = 'Big ' + name
c = Cat.from_number(3)
print c.name
bc = BigCat.from_number(16)
print bc.name
Number 3 Big Number 16