【python】gevent协程例子

#!/usr/bin/env python
#coding=utf-8

from gevent import monkey; monkey.patch_socket()
import gevent.pool
import gevent

def do_something(ip):  #在io时协程自动切换
    #request ip
    pass
    
def main():
    pool = gevent.pool.Pool(1000)
    f = open("a_lot_of_ip.json", "r")
    g = []
    for d in f.readlines():
        ip = d
        pool.add(gevent.spawn(do_something, ip))
    f.close()
    pool.join()
    
if __name__ == "__main__":
    main()