test_polynomial.py 文件源码

def test_str_leading_zeros(self):
        p = np.poly1d([4, 3, 2, 1])
        p[3] = 0
        assert_equal(str(p),
                     "   2\n"
                     "3 x + 2 x + 1")

        p = np.poly1d([1, 2])
        p[0] = 0
        p[1] = 0
        assert_equal(str(p), " \n0")