import socket

UDP_IP = "::1"  # localhost
UDP_PORT = 4433
MESSAGE = b"Hello, World!"

print ("UDP target IP:", UDP_IP)
print ("UDP target port:", UDP_PORT)
print ("message:", MESSAGE)

sock = socket.socket(socket.AF_INET6, # Internet
                     socket.SOCK_DGRAM) # UDP
sock.sendto(MESSAGE, (UDP_IP, UDP_PORT))