io多路复用（三）

 #！/usr/bin/env python
 # -*- coding:utf-8 -*-
 import socket
 sk1 = socket.socket()
 sk1.bind(('127.0.0.1',8001,))
 sk1.listen()

 inputs = [sk1,]
 outputs = []
 message_dict = {}
 import select
 while True:
     # [sk1,sk2,sk3]select内部自动监听sk1,sk2,sk3,三个对象，一旦某个句柄发生变化（accept（））
     # 如果有链接sk1
     # r_list = [sk1,sk2]
     r_list,w_list,e_list = select.select(inputs,outputs,inputs,1)
     print('正在监听的socket对象%d' % len(inputs))
     print(r_list)
     for sk1_or_conn in r_list:
         # 每一个链接对象
         if sk1_or_conn ==sk1:
             # 表示有新用户链接
             conn,adress = sk1_or_conn.accept()
             inputs.append(conn)
             message_dict[conn] = []
         else:
             # 表示有老用户来链接
             try:
                 data_bytes = sk1_or_conn.recv(1024)
             except Exception as e:
             else:
                 data_str = str(data_bytes, encoding='utf-8')
                 message_dict[sk1_or_conn].append(data_str)
                 outputs.append(sk1_or_conn)
                 #sk1_or_conn.sendall(bytes(data_str + '好', encoding='utf-8'))
     for conn in w_list:
         recv_str = message_dict[conn][0]
         del message_dict[conn][0]
         conn.sendall(bytes(recv_str + '好', encoding='utf-8'))
         outputs.remove(conn)
     for sk in e_list:
         inputs.remove(sk)