from socket import *
serverPort = 12000
serverSocket = socket(AF_INET, SOCK_DGRAM)
serverSocket.bind(('', serverPort))
print ("The server is ready to receive")
while 1:
   message, clientAddress = serverSocket.recvfrom(2048)
   modifiedMessage = message.decode().upper()
   serverSocket.sendto(modifiedMessage.encode(), clientAddress)