code: def setUpModule():
      chex.set_n_cpu_devices(n=4)
      chex.assert_devices_available(n=4, devtype="cpu", backend="cpu")
  
imports: import functools
  from absl.testing import absltest
  from absl.testing import parameterized
  import chex
  import haiku
  from haiku import data_structures
  from haiku import initializers
  import jax
  import jax.nn
  import jax.numpy
  import numpy
  from rlax._src import pop_art
label_desc: Use image node_id 1 for calling a global function with example usage: setUpModule() without return types