There is no monster in my dungeon

import random
#--------------------------
CELLS = [(0,2), (1,2), (2,2),
        (0,1), (1,1), (2,1),
        (0,0), (1,0), (2,0)]
#--------------------------
def get_places():
  mo = (random.choice(CELLS))
  do = (random.choice(CELLS))
  me = (random.choice(CELLS))
  if mo == do or mo == me or do==me:
    return get_places()
  return mo, do, me
#--------------------------
def move_player(me, move):
  # i thought i had to get the me and move values first
  x, y = me
  if move == "left":
    x -= 1
  if move == "right":
    x += 1
  if move == "up":
    y += 1
  if move == "down":
    y -= 1

  return x,y
#--------------------------
def get_moves(me):
  moves = ['left', 'right', 'up', 'down']
  if me[0] == 0:
    moves.remove('left')
  if me[0] == 2:
    moves.remove('right')
  if me[1] == 2 :
    moves.remove('up')
  if me[1] == 0:
    moves.remove('down')
  return moves
#--------------------------
mo, do, me = get_places()
print("Welcome to the Dungeon!")
while True:

  moves = get_moves(me)

  print("Your are at {}, RUN!".format(me))
  print("You can move to {}.".format(moves))
  #print("press quit to quit the game")

  move = input("> ")

  if move == "quit":
    break

  if move == mo:
    print("You were eaten by the grue")
    print("GAME OVER")
    break
  elif move == do:
    print("You won the game")
    break

  elif move in moves:
    me = move_player(me, move)
  else:
    print("** Walls are hard, stop walking into them **")
    continue