python __init__ method in inherited class

Question

I would like to give a daughter class some extra attributes without having to explicitly call a new method. So is there a way of giving the inherited class an __init__

Answer 1

Just call a designated method from the parent's init, if it exists:

class initialclass():
    def __init__(self):
        self.attr1 = 'one'
        self.attr2 = 'two'  
        if hasattr(self, 'init_subclass'):
            self.init_subclass()

class inheritedclass(initialclass):
    def init_subclass(self):
        self.attr3 = 'three'