test server

import socket
import threading

#server =socket.socket()


class server():
    server = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    connections = []
    def __init__(self):
        self.server.bind(('0.0.0.0',4000))
        self.server.listen(3)


    def Querry(self,conn,addr):
        while True:
            data= conn.recv(1024)
            print(conn)
            conn.send(str.encode('hello to server  : ')+str.encode(addr[0]))
            conn.send(str.encode('first'))
            conn.send(str.encode('2nd'))
            data=conn.recv(1024)
            conn.send(str.encode('last'))
            if not data:
                self.connections.remove(conn)
                conn.close
                break

    def run(self):
        while True:
            conn,addr=self.server.accept()
            Thread= threading.Thread(target=self.Querry,args=(conn,addr))
            Thread.daemon=True
            Thread.start()
            self.connections.append(conn)
            print(self.connections)

server=server()
server.run()