python的单线程多任务的实现

本文实例为大家分享了python实现单线程多任务非阻塞TCP服务端的具体代码，供大家参考，具体内容如下

# coding:utf-8
from socket import *

# 1.创建服务器socket
sock = socket(AF_INET, SOCK_STREAM)

# 2.绑定主机和端口
addr = ('', 7788) #
sock.bind(addr)

# 3. 设置最大监听数目，并发
sock.listen(10)

# 4. 设置成非阻塞
sock.setblocking(False)
# 保存客户端socket
clientAddrList = []
# print(sock.)

while 1:
  try:
    clientSocket, clientAddr = sock.accept()
  except:
    pass
  else:
    print("一个新客户端到来：%s" % str(clientAddr))
    clientSocket.setblocking(False)
    clientAddrList.append((clientSocket, clientAddr))

  for clientSocket, clientAddr in clientAddrList:
    try:
      recvData = clientSocket.recv(1024)
    except:
      pass
    else:
      if len(recvData) > 0:
        print("%s:%s" % (str(clientAddr), recvData))
      else:
        clientSocket.close()
        clientAddrList.remove((clientSocket, clientAddr))
        print("%s 已经下线" % str(clientAddr))

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