code: def test_poly_eq(self):
      # Ticket #554
      x = np.poly1d([1, 2, 3])
      y = np.poly1d([3, 4])
      assert_(x != y)
      assert_(x == x)
  
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 12 for calling the TestRegression obj's underlying member method code with example usage: obj.test_poly_eq() without return types