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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 derivativeW(self,*args):
        '''
        Returns the derivative of the function with respect to the W dimension.
        This should only exist when n_dims >= 4.
        '''
        if self.n_dims >= 4:
            j = 0
        else:
            assert False, "Derivative with respect to W can't be called when n_dims < 4!"
        if self.i_dim == j:
            return np.ones_like(*args[0])
        else:
            return np.zeros_like(*args[0])