code: def test_chebyt(self):
      T0 = orth.chebyt(0)
      T1 = orth.chebyt(1)
      T2 = orth.chebyt(2)
      T3 = orth.chebyt(3)
      T4 = orth.chebyt(4)
      T5 = orth.chebyt(5)
      assert_array_almost_equal(T0.c, [1], 13)
      assert_array_almost_equal(T1.c, [1, 0], 13)
      assert_array_almost_equal(T2.c, [2, 0, -1], 13)
      assert_array_almost_equal(T3.c, [4, 0, -3, 0], 13)
      assert_array_almost_equal(T4.c, [8, 0, -8, 0, 1], 13)
      assert_array_almost_equal(T5.c, [16, 0, -20, 0, 5, 0], 13)
  
imports: import numpy
  from numpy import array, sqrt
  from numpy.testing import assert_array_almost_equal, assert_equal, assert_almost_equal, assert_allclose
  from pytest import raises
  from scipy import integrate
  import scipy.special
  from scipy.special import gamma
  import scipy.special._orthogonal
label_desc: Use image node_id 3 for calling the TestCheby obj's underlying member method code with example usage: obj.test_chebyt() without return types