python使用udp实现聊天器功能

import socket
def send_message(udp_socket):
    # 输入对方的ip/port
    dest_ip = input("请输入对方的ip：")
    dest_port = int(input("请输入对象的port："))
    # 读取输入的数据
    send_data = input('请输入要发送的数据：')
    # 发送数据
    dest_addr = (dest_ip, dest_port)
    udp_socket.sendto(send_data.encode('GBK'), dest_addr)
def recv_message(udp_socket):
    # 接收数据
    recv_data = udp_socket.recvfrom(1000)
    print("%s:%s" % (recv_data[1], recv_data[0].decode("utf-8")))  
def main():
    # 创建套接字
    udp_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    while True:
        send_message(udp_socket)
        recv_message(udp_socket)
    # 关闭
    udp_socket.close()
if __name__ == '__main__':
    main()

import socket
def send_message(udp_socket):
    # 输入对方的ip/port
    dest_ip = input("请输入对方的ip：")
    dest_port = int(input("请输入对象的port："))
    # 读取输入的数据
    send_data = input('请输入要发送的数据：')
    # 发送数据
    dest_addr = (dest_ip, dest_port)
    udp_socket.sendto(send_data.encode('GBK'), dest_addr)
def recv_message(udp_socket):
    # 接收数据
    recv_data = udp_socket.recvfrom(1000)
    print("%s:%s" % (recv_data[1], recv_data[0].decode("utf-8")))  
def main():
    # 创建套接字
    udp_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    while True:
        op = input("请输入您要执行的操作：")
        if op == "1":
            send_message(udp_socket)
        elif op == "2":
            recv_message(udp_socket)
        elif op == "0":
            break
        else:
            print("您的输入有误！")
    # 关闭
    udp_socket.close()
if __name__ == '__main__':
    main()

$ cd ~/Desktop
$ sudo dpkg -i mNetAssist-release-amd64.deb
[sudo] password for xxxx:
Selecting previously unselected package mnetassist.
(Reading database ... 182763 files and directories currently installed.)
Preparing to unpack mNetAssist-release-amd64.deb ...
Unpacking mnetassist (0.1.1) ...
Setting up mnetassist (0.1.1) ...
Processing triggers for gnome-menus (3.13.3-6ubuntu3.1) ...
Processing triggers for desktop-file-utils (0.22-1ubuntu5.1) ...
Processing triggers for bamfdaemon (0.5.3~bzr0+16.04.20160824-0ubuntu1) ...
Rebuilding /usr/share/applications/bamf-2.index...
Processing triggers for mime-support (3.59ubuntu1) ...