code: def main():
      pool = Pool(processes=4)
      pi = (
          4.0
          * sum(pool.map(is_inside, range(0, NUM_SAMPLES)))
          / NUM_SAMPLES
      )
      print("Pi is roughly {}".format(pi))
  
label_desc: Use image node_id 2 for calling a global function with example usage: main() without return types