etest.py

import eventlet
eventlet.monkey_patch()
import os
import time


def fun():
    num = 0
    while True:
        print num
        num += 1
        time.sleep(1)


def main():
    eventlet.spawn_n(fun)
    for i in range(5):
        pid = os.fork()
        if pid != 0:
            break
    time.sleep(10)


if __name__ == '__main__':
    main()