SENDING UDP PACKETS WITH PYTHON AND KEYBOARD

###################################################################Python Code:#######################################################
from pynput import keyboard
import socket
import time

UDP_IP = "192.168.4.1"
UDP_PORT = 80
MSG = "pin="
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)  # UDP

print("TARGET IP", UDP_IP)
print("TARGET PORT", UDP_PORT)
print("message", MSG)

def on_press(key):
   try:
       print('alphanumeric key {0} pressed'.format(
           key.char))
   except AttributeError:
       print('special key {0} pressed'.format(
           key))

def on_release(key):
   print('{0} released'.format(
       key))
   if key == keyboard.Key.esc:
       # Stop listener
       return False
   if key == keyboard.Key.left:
       MSG = "pin=1"
       senderPrint(MSG)
   if key == keyboard.Key.down:
       MSG = "pin=2"
       senderPrint(MSG)
   if key == keyboard.Key.right:
       MSG = "pin=3"
       senderPrint(MSG)

def senderPrint(MSG):
   i = 0
   print("\nPacket \"" + MSG + "\" sent\n")
   while i < 1:
       sock.sendto(MSG.encode(), (UDP_IP, UDP_PORT))
       i += 1

# Collect events until released
with keyboard.Listener(
       on_press=on_press,
       on_release=on_release) as listener:
   listener.join()