Run with os.system

---

examples/process/os_system.py

import os
import sys

exit_code = os.system(f"python process.py 5 2")
print(f'exit code: {exit_code // 256}')

OUT 0
ERR 0
OUT 1
ERR 1
OUT 2
ERR 2
OUT 3
ERR 3
OUT 4
ERR 4
exit code: 2