Why can't pass *args and **kwargs in __init__ of a child class

Question

To understand *args and **kwargs I made some searchs about, when I fell on this question *args and **kwargs?

The answer below the chosen answer caught my attention,

Answer 1

I think it is worth adding that this can be used to simplify the __init__ signatures in the child classes. The positional arguments are pealed off from left to right so if you add them to the front and pass the rest to args and kwargs you can avoid mistakes from forgetting to add them explicitly to each of the children. There is some discussion about if that is an acceptable exception "explicit is better than implicit" here. For long lists of args in deep hierarchy this may be clearer and easier to maintain.

To modify this example, I add not_for_Foo to the front of MyFoo and pass the rest through super.

class Foo(object):
    def __init__(self, a_value1, a_value2, a_stack=None, *args, **kwargs):
        """do something with the values"""
        super(Foo, self).__init__(*args, **kwargs) # to objects constructor fwiw, but object.__init__() takes no args
        self.value1 = a_value1
        self.value2 = a_value2
        self.stack = a_stack
        return

    def __str__(self):
        return ', '.join(['%s: %s' % (k, v) for k, v in self.__dict__.items()])


class MyFoo(Foo):
    def __init__(self, not_for_Foo, *args, **kwargs):
        # do something else, don't care about the args
        super(MyFoo, self).__init__(*args, **kwargs)
        self.not_for_Foo = not_for_Foo # peals off
        self.myvalue1 = 'my_' + self.value1 # already set by super


if __name__ == '__main__':

    print 'Foo with args'
    foo = Foo('Python', 2.7, 'my stack')
    print foo

    print '\nMyFoo with kwargs'
    myfoo = MyFoo('my not for foo', value2=2.7, value1='Python', stack='my other stack')
    print myfoo


$ python argsNkwargs.py 
Foo with args
value2: 2.7, value1: Python, stack: my stack

MyFoo with kwargs
myvalue1: my_Python, not_for_Foo: my not for foo, value2: 2.7, value1: 
Python, stack: my other stack

-lrm