Sample TCP server

from socket import *
serverPort = 12000
serverSocket = socket(AF_INET, SOCK_STREAM)
serverSocket.bind(('', serverPort))
serverSocket.listen(1)
print('The server is ready to receive')
while True:
  connectionSocket, addr = serverSocket.accept()
  sentence = connectionSocket.recv(1024).decode(serverName)
  capitalizedSentence = sentence.upper()
  connectionSocket.send(capitalizedSentence.encode())
  connectionSocket.close()