udp_client.py

import socket

udp_client = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
message = 'Hello the from UDP client'
udp_client.sendto(message.encode(), ("127.0.0.1", 20001))

data, server_address = udp_client.recvfrom(1024)
print('Client: data received from the server at ' + str(server_address) + ':', data.decode())