python decorator to pre-populate key word arguments

kw_decorator.py

def decorator_generator(**kw_dict):
    def decorator(fun):
        def decorated(*args, **kwargs):
            kwargs.update(kw_dict)
            return fun(*args, **kwargs)
        return decorated
    return decorator

@decorator_generator(c=3)
def foo(a, c):
    return 2*a + c*c
  
foo(2)
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