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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def get_params(self, *args, **kwargs):
        '''
        Create an array or positional or named parameters
        Mixing positional and named parameters in one
        call is not possible.
        '''
        kwargs.update(self._data)
        if args and kwargs:
            raise ValueError('Cannot mix positional and named parameters')
        if args:
            return list(args)
        else:
            return kwargs