如何在python服务器上多线程

请帮助我有此代码

import socket
from threading import *
import time
HOST = ''   # Symbolic name meaning all available interfaces
PORT = 8888 # Arbitrary non-privileged port

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
print ('Socket created')
s.bind((HOST, PORT))     
print ('Socket bind complete')
s.listen(10)
print ('Socket now listening')
def listen(conn):
    odata = ""
    end = 'end'
    while end == 'end':
        data = conn.recv(1024)
        if data != odata:
            odata = data
            print(data)
            if data == b'end':
                end = ""
    print("conection ended")
    conn.close()
while True:
    time.sleep(1)
    conn, addr = s.accept()
    print ('Connected with ' + addr[0] + ':' + str(addr[1]))
    Thread.start_new_thread(listen,(conn))

而且我希望这样，以便每当有人进入服务器时，它都有其自己的线程。但是我无法正常工作，请有人帮助我。：_（这是错误代码：

Socket created
Socket bind complete
Socket now listening
Connected with 127.0.0.1:61475
Traceback (most recent call last):
  File "C:\Users\Myles\Desktop\test recever - Copy.py", line 29, in <module>
    Thread.start_new_thread(listen,(conn))
AttributeError: type object 'Thread' has no attribute 'start_new_thread'

我在python版本3.4.0上，这是用户代码：

import socket   #for sockets
import time
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
print('Socket Created')

host = 'localhost'
port = 8888
remote_ip = socket.gethostbyname( host )
print('Ip address of ' + host + ' is ' + remote_ip)
#Connect to remote server
s.connect((remote_ip , port))

print ('Socket Connected to ' + host + ' on ip ' + remote_ip)
while True:
    message = input("> ")
    #Set the whole string
    s.send(message.encode('utf-8'))
    print ('Message send successfully')
    data = s.recv(1024)
    print(data)
s.close