x and y coordinates

import random

# map code (a list of coordinates) - this is a constant
CELLS = [(0, 0), (1, 0), (2, 0), 
         (0, 1), (1, 1), (2, 1),
         (0, 2), (1, 2), (2, 2)]

# code to set the initial locations
def get_locations():
  # monster = random
  monster = random.choice(CELLS)
  # door = random
  door = random.choice(CELLS)
  # start = random
  start = random.choice(CELLS) 
  # if monster, door, or start are the same, do it again

  if monster == door or monster == start or door == start:
    return get_locations()
  # return monster, door, start

  return monster, door, start

# function for moving the player
def move_player(player, move):
  # get the player's current location
  x, y = player  
  # if move is LEFT, x - 1
  if move == 'LEFT':
    x -= 1
  # if move is RIGHT, x + 1
  elif move == 'RIGHT':
    x += 1
  # if move is UP, y -1
  elif move == 'UP':
    y -= 1
  # if move is DOWN, y + 1
  elif move == 'DOWN':
    y += 1
  return x, y


def get_moves(player):
  moves = ['LEFT', 'RIGHT', 'UP', 'DOWN']
  # player = (x, y)
  if player[0] == 0:
    moves.remove('LEFT')
  if player[0] == 2:
    moves.remove('RIGHT')
  if player[1] == 0:
    moves.remove('UP')
  if player[1] == 2:
    moves.remove('DOWN')

  return moves

def draw_map(player):
  print(' _ _ _')
  tile = '|{}'

  for idx, cell in enumerate(CELLS):
    if idx in [0, 1, 3, 4, 6, 7]:
      if cell == player:
        print(tile.format('X'), end='')
      else:
        print(tile.format('_'), end='')
    else:
      if cell == player:
        print(tile.format('X|'))
      else:
        print(tile.format('_|'))

monster, door, player = get_locations()
print("Welcome to the dungeon!")

while True:
  moves = get_moves(player)
  print("You're currently in room {}".format(player)) # fill in with player position

  draw_map(player)

  print("You can move {}".format(moves)) 
  print("Enter QUIT to quit")

  move = input("> ")
  move = move.upper()


  if move == 'QUIT':
    break

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

  if player == door:
    print("You escaped!")
    break
  elif player == monster:
    print("You were eaten by the grue!")
    break