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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 from_regular_array(self, A):
 """ Converts from an array of type `int` where the last index is assumed to have length `self.n_elements` to an array of type `self.d_type` with one fewer index. :param np.ndarray A: An `np.array` of type `int`. :rtype: `np.ndarray` """

        dims = A.shape[:-1]
        return A.reshape((np.prod(dims),-1)).view(dtype=self.dtype).squeeze(-1).reshape(dims)