code: def teardown_method(self):
      np.seterr(**self.old_seterr)
  
imports: import multiprocessing
  from scipy.optimize import _differentialevolution
  from scipy.optimize._differentialevolution import DifferentialEvolutionSolver
  from scipy.optimize import differential_evolution
  import numpy
  from scipy.optimize import rosen
  from numpy.testing import assert_equal, assert_allclose, assert_almost_equal, assert_string_equal, assert_
  from pytest import raises, warns
label_desc: Use image node_id 2 for calling the TestDifferentialEvolutionSolver obj's underlying member method code with example usage: obj.teardown_method() without return types