code: def target_func(**kwargs):
      # arbitrary target func
      return sum(kwargs.values())
  
imports: import pytest
  import numpy
  from bayes_opt import UtilityFunction
  from bayes_opt import BayesianOptimization
  from bayes_opt.logger import ScreenLogger
  from bayes_opt.event import Events, DEFAULT_EVENTS
  from bayes_opt.util import NotUniqueError
  import pickle
  import os
label_desc: Use image node_id 1 for calling a global function with example usage: target_func() and returns: sum