Method sum

ot/backend.py:1175–1176

(self, a, axis=None, keepdims=False)

            return np.eye(N, M, dtype=type_as.dtype)

    def sum(self, a, axis=None, keepdims=False):
        return np.sum(a, axis, keepdims=keepdims)

    def cumsum(self, a, axis=None):
        return np.cumsum(a, axis)