code: def test_lower_f_accepted(self):
      assert_(self.met(f_new=0.0, f_old=1.0))
  
imports: from __future__ import division, print_function, absolute_import
  import copy
  from numpy.testing import assert_almost_equal, assert_equal, assert_
  from pytest import raises
  import numpy
  from numpy import cos, sin
  from scipy.optimize import basinhopping, OptimizeResult
  from scipy.optimize._basinhopping import Storage, RandomDisplacement, Metropolis, AdaptiveStepsize
label_desc: Use image node_id 3 for calling the Test_Metropolis obj's underlying member method code with example usage: obj.test_lower_f_accepted() without return types