Setting default values of kwargs and inherit it

Setting a default value for kwargs

kwargs.setdefault('var', True)

Using for loop can set multiple default values.

for key, val in {'var1': 1, 'var2': 2}.items():
    kwargs.setdefault(key, val)

kwargs attribute

class foo:
    def __init__(self, **kwargs):
        kwargs.setdefault('var1', 1)
        self.kwargs = kwargs

    def print(self):
        print(self.kwargs['var1']


a = foo()
a.print()

# 1

Inherit kwargs

class foo2(foo):
    def __init__(self, **kwargs):
        kwargs.setdefault('var1', 2)
        super().__init__(**kwargs)
        
    def print(self):
        print(self.kwargs['var1'])

a2 = foo2()
a2.print()

# 2

The new default value has to be set before initiating super class, otherwise the parent default value will be used.

a2 = foo2(var1=3)
a2.print()

# 3