code: def test_poly_div(self):
      # Ticket #553
      u = np.poly1d([1, 2, 3])
      v = np.poly1d([1, 2, 3, 4, 5])
      q, r = np.polydiv(u, v)
      assert_equal(q * v + r, u)
  
imports: import os
  import numpy
  from numpy.testing import assert_, assert_equal, assert_array_equal, assert_array_almost_equal, assert_raises, _assert_valid_refcount
label_desc: Use image node_id 11 for calling the TestRegression obj's underlying member method code with example usage: obj.test_poly_div() without return types