//服务器端代码 from socket import *from time import ctimehost='localhost'port=3330bufsize = 1024addr = (host,port)tcpser = socket(AF_INET,SOCK_STREAM)tcpser.bind(addr)tcpser.listen(5)while True:    print('waiting for connetion....')    tcpCliSock,ADDR = tcpser.accept()    print('...connection from:',ADDR)    while True:        data = tcpCliSock.recv(bufsize)        if not data:            break        tcpCliSock.send(('[%s]%s'%(ctime(),data)).encode())    tcpCliSock.close()tcpser.close()

//客户端代码 from socket import *host='localhost'port=3330bufsize = 1024addr = (host,port)tcpser = socket(AF_INET,SOCK_STREAM)tcpser.connect(addr)while True:    data = input('>')    if not data:        break    tcpser.send(data.encode())    data = tcpser.recv(bufsize).decode()    if not data:        break    print(data)tcpser.close()

以上代码为python核心编程（第三版）网络编程一节代码，其中一些错误已经被我修改可正常运行