TypeError: 'kwarg' is an invalid keyword argument for this function

[roro codeath]

How to implement it in my class?

class Str(str):
    def __init__(self, *args, **kwargs):
        pass

Str('smth', kwarg='a')

# How to implement in my class

class C:
   def __init__(self):
       pass

class C2(C):
    def __init__(self, *args, **kwargs):
        pass
C2(kwarg='a')
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