import socket
def send_msg(upd_socket):
 """发送消息"""
 # 获取要发送的内容
 dest_ip = input("请输入对方的ip地址:")
 dest_port = int(input("请输入对方的端口号:"))
 send_data = input("请输入要发送的消息")
 upd_socket.sendto(send_data.encode("utf-8"), (dest_ip, dest_port))
def recv_msg(upd_socket):
 # 接收数据和显示
 recv_data = upd_socket.recvfrom(1024)
 print("%s:%s" % (recv_data[0].decode("utf-8"), str(recv_data[1])))
def main():
 # 创建套接字
 upd_socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
 # 绑定信息
 upd_socket.bind("", 7788)
 # 循环来进行处理事情
 while True:
  send_msg(upd_socket)
  recv_msg(upd_socket)
if __name__ == "__main__":
 main()

def main():
 pass
 # 1.创建套接字
 # 2.绑定本地信息
 # 3.知道目标地址和端口号
 # 4.接收数据与显示
 # 5.关闭套接字
if __name__ == "__main__":
 main()