from sys import argv, stderr, stdout
from time import sleep

timeout = float(argv[1]) if len(argv) > 1 else 1

stdout.write("start stdout\n")
stdout.flush()
stderr.write("start stderr\n")
stderr.flush()
sleep(timeout)
stdout.write("end stdout\n")
stdout.flush()
stderr.write("end stderr\n")
stderr.flush()
