code: def main():
      try:
          n = int(sys.argv[1])
      except IndexError:
          n = 256
      try:
          P = int(sys.argv[2])
      except IndexError:
          P = 5
      with MPIPoolExecutor(P) as executor:
          P = executor.num_workers
          fs = [executor.submit(compute_pi, n) for _ in range(P)]
          wait(fs)
          pi = fs[0].result()
          print(
              f"pi: {pi:.15f}, error: {abs(pi - math.pi):.3e}",
              f"({n:d} intervals, {P:d} workers)",
          )
  
imports: import math
  import sys
  from mpi4py.futures import MPIPoolExecutor, wait
  from mpi4py.futures import get_comm_workers
label_desc: Use image node_id 2 for calling a global function with example usage: main() without return types