code: def test_primes():
      with MPIPoolExecutor(4) as executor:
          for number, prime in zip(
              PRIMES, executor.map(is_prime, PRIMES)
          ):
              print("%d is prime: %s" % (number, prime))
  
imports: import math
  from mpi4py.futures import MPIPoolExecutor
label_desc: Use image node_id 2 for calling a global function with example usage: test_primes() without return types