code: def test_sbo_compile():
      search_space = search.SearchSpace(
          n_agents=2,
          n_variables=2,
          lower_bound=[1, 1],
          upper_bound=[10, 10],
      )
  
      new_sbo = sbo.SBO()
      new_sbo.compile(search_space)
  
      try:
          new_sbo.sigma = 1
      except:
          new_sbo.sigma = []
  
      assert new_sbo.sigma == []
  
imports: import numpy
  from opytimizer.optimizers.swarm import sbo
  from opytimizer.spaces import search
label_desc: Use image node_id 3 for calling a global function with example usage: test_sbo_compile() without return types