input: Write a python function to determine the winner of a card game by comparing the scores of two players.
  assert isWinner('player1', 'player2') in ['player1 Wins', 'player2 Wins', 'It is a tie']
  assert isWinner('player1', 'player2') == 'player1 Wins' or isWinner('player1', 'player2') == 'player2 Wins' or isWinner('player1', 'player2') == 'It is a tie'
  assert type(isWinner('player1', 'player2')) == str
output: def isWinner(player1, player2):
      score1 = sum(ord(char) for char in player1)
      score2 = sum(ord(char) for char in player2)
  
      if score1 > score2:
          return 'player1 Wins'
      elif score2 > score1:
          return 'player2 Wins'
      else:
          return 'It is a tie'