socket + select 完成伪并发操作的实例

#!/usr/bin/env python# -*- coding: utf-8 -*-import socket#创建一个socket对象sk1 = socket.socket()#绑定ip和端口sk1.bind(('127.0.0.1', 8001))#监听sk1.listen()#定义一个字典存放客户端发送的信息message_dict = {}#inputs用于存放socket对象inputs = [sk1]#哪一个客户端发送信息就把哪一个客户端的存放进outputoutput = []import selectwhile True:  r_list, w_list, e_list = select.select(inputs, output, inputs, 1)  print('正在监听的socket%d' %len(inputs))  print(r_list)  for sk_or_conn in r_list:    if sk_or_conn == sk1:      conn, address = sk_or_conn.accept()      inputs.append(conn)      message_dict[conn] = []    else:      try:        data_bytes = sk_or_conn.recv(1024)      except Exception as ex:        inputs.remove(sk_or_conn)      else:        data_str = str(data_bytes, encoding='utf-8')        message_dict[sk_or_conn].append(data_str)        output.append(sk_or_conn)  for conn in w_list:    data_message = message_dict[sk_or_conn][0]    del message_dict[sk_or_conn][0]    conn.sendall(bytes(data_message + '好',encoding='utf-8'))    output.remove(conn)