code: def test_numpy_ravel(self):
      assert_equal(np.ravel(self.a).shape, (2,))
      assert_equal(np.ravel(self.m).shape, (2,))
  
imports: import collections.abc
  import numpy
  from numpy import matrix, asmatrix, bmat
  from numpy.testing import assert_, assert_equal, assert_almost_equal, assert_array_equal, assert_array_almost_equal, assert_raises
  from numpy.linalg import matrix_power
  from numpy.matrixlib import mat
label_desc: Use image node_id 2 for calling the TestShape obj's underlying member method code with example usage: obj.test_numpy_ravel() without return types