Python inheritance __init__ calling

inheritance.py

class BaseWithInit(object):

    def __init__(self):
        print "Init BaseWithInit"


class ClassWithoutInit(BaseWithInit):
    pass


class ClassWithInit(BaseWithInit):

    def __init__(self):
        print "Init ClassWithInit"


class ClassWithInitCallingSuper(BaseWithInit):

    def __init__(self):
        print "Init ClassWithInitCallingSuper"
        super(ClassWithInitCallingSuper, self).__init__()



if __name__ == '__main__':
    print "----------------------"
    print "ClassWithoutInit"
    ClassWithoutInit()
    print "----------------------"
    print "ClassWithInit"
    ClassWithInit()
    print "----------------------"
    print "ClassWithInitCallingSuper"
    ClassWithInitCallingSuper()