code: def test_walkers_dependent_ones(nwalkers, ndim):
      assert not walkers_independent(np.ones((nwalkers, ndim)))
  
imports: import pickle
  from itertools import islice, product
  import numpy
  import pytest
  from emcee import EnsembleSampler, backends, moves, walkers_independent
label_desc: Use image node_id 10 for calling a global function with example usage: test_walkers_dependent_ones(nwalkers, ndim) without return types