python udp双向通信

import jsonimport socketimport threadingimport loggingthislist = []thisneednum = {}class ChatUdpMain:   def __init__(self):      #其他原有逻辑 begin      #其他原有逻辑 end      #  1.创建socket套接字   收      self.udp_socket_receive = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)  # AF_INET表示使用ipv4,默认不变，SOCK_DGRAM表示使用UDP通信协议      #  2.绑定端口port  收      local_addr_receive = ("127.0.0.1", 45678)  # 默认本机任何ip ，指定端口号45678,用于接收数据      self.udp_socket_receive.bind(local_addr_receive)  # 绑定端口      #  1.创建socket套接字   发      self.udp_socket_send = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)  # AF_INET表示使用ipv4,默认不变，SOCK_DGRAM表示使用UDP通信协议      #  2.绑定端口port  发      local_addr_send = ("127.0.0.1", 45671)  # 默认本机任何ip，初始化使用，实际45671没有用      self.udp_socket_send.bind(local_addr_send)  # 绑定端口      self.start()      self.thislist = thislist      self.thisneednum = thisneednum   def close(self):      try:         self.udp_socket_send.close()         self.udp_socket_receive.close()      except Exception as e:          logging.info(e)   def send(self, val: str):      try:         data = str.encode(str(val))         self.udp_socket_send.sendto(data, ("127.0.0.1", 45679))  # 默认本机任何ip ，45679是发数据的端口      except Exception as e:          logging.info(e)   # 开启线程   def start(self):      # 启动新线程接收数据      threading.Thread(target=self._recv, name='recv').start()   #接收qt发来的实时数据   def _recv(self):      while 1:         try:            self.recevalue = self.udp_socket_receive.recv(5000)            print("收到数据  ")            print(self.recevalue)            try:               i = 1               for k, v in json.loads(self.recevalue).items():                  if k in self.thislist:                     self.thisneednum[i] = v                     i += 1               print("数据解析成功")               self.jisuan(self.thisneednum)            except ValueError:               print("ValueError")         except Exception as e:            logging.info(e)   def jisuan(self, d: dict):      for i in self.thisneednum:         print(self.thisneednum[i])      #这里就是计算      #得到结果      # JSON 字符串      json_string = '{"Type": "PCA","name": "Kyrie", "age": 31}'      # 解析 JSON 字符串      self.data = json.loads(json_string)      self.data = json.dumps(self.data)      # 给qt发结果      self.send(self.data)      #self.close()def needcs():    with open("config-PCA.ini", "r") as f:        str = f.read()        strlist = str.split(',')    for item in strlist:        thislist.append(item)#主函数def main():    needcs()    chatUdp = ChatUdpMain()if __name__ == '__main__':    main()