python创建TCP服务器

python创建TCPSever，python2和python3基本相同，除了以下区别：

• python2引用SocketServer库，python3引用socketserver库
• 发送字符串，python2可直接调用self.wfile.write(content)，python3需调用self.wfile.write(content.encode())，否则会出现需要传入参数错误：“TypeError: a bytes-like object is required, not ‘str’”

创建tcp服务器的代码如下：

import struct
import time
from SocketServer import (TCPServer as TCP, StreamRequestHandler as SRH) # python2
from socketserver import (TCPServer as TCP, StreamRequestHandler as SRH) # python3

HOST = 'localhost'
PORT = 9984
ADDR = (HOST, PORT)

class MyRequestHandler(SRH):
def handle(self):
print('...connected from:', self.client_address[0])
self.SendData()

def TrasAllpluse(self):
pulseNum = 0
try:
while True:
content = “This is data”
self.wfile.write(content) 	# python2没问题, python3要崩溃
self.wfile.write(content.encode())	# python3没问题
time.sleep(0.0005)
except:
print("---- error ----\n")

tcpServ = TCP(ADDR, MyRequestHandler)
print('waiting for connection...')
tcpServ.serve_forever()

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