1 #！/usr/bin/env python 2 # -*- coding:utf-8 -*- 3 import socket 4 sk1 = socket.socket() 5 sk1.bind(('127.0.0.1',8001,)) 6 sk1.listen() 7  8 inputs = [sk1,] 9 outputs = []10 message_dict = {}11 import select12 while True:13     # [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（））14     # 如果有链接sk115     # r_list = [sk1,sk2]16     r_list,w_list,e_list = select.select(inputs,outputs,inputs,1)17     print('正在监听的socket对象%d' % len(inputs))18     print(r_list)19     for sk1_or_conn in r_list:20         # 每一个链接对象21         if sk1_or_conn ==sk1:22             # 表示有新用户链接23             conn,adress = sk1_or_conn.accept()24             inputs.append(conn)25             message_dict[conn] = []26         else:27             # 表示有老用户来链接28             try:29                 data_bytes = sk1_or_conn.recv(1024)30             except Exception as e:31             else:32                 data_str = str(data_bytes, encoding='utf-8')33                 message_dict[sk1_or_conn].append(data_str)34                 outputs.append(sk1_or_conn)35                 #sk1_or_conn.sendall(bytes(data_str + '好', encoding='utf-8'))36     for conn in w_list:37         recv_str = message_dict[conn][0]38         del message_dict[conn][0]39         conn.sendall(bytes(recv_str + '好', encoding='utf-8'))40         outputs.remove(conn)41     for sk in e_list:42         inputs.remove(sk)