python实现Linux异步epoll代码

import socket
import select

if __name__=="__main__":
s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
s.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
s.bind(("",20123))
s.listen(10)
epoll=select.epoll()
print s.fileno()
print select.EPOLLIN|select.EPOLLET
epoll.register(s.fileno(),select.EPOLLIN|select.EPOLLET)
while 1:
epoll_list=epoll.poll()
for fd,events in epoll_list:
print fd
print events
if fd==s.fileno():
conn,addr=s.accept()
print 123