Dungeon game issue

import random
import os
def clear_screen():
    os.system("cls" if os.name == "nt" else "clear")

CELLS = [(0,0),(1,0),(2,0,),(3,0),(4,0),
         (0,1),(1,1),(2,1),(3,1),(4,1),
         (0,2),(1,2),(2,2),(3,2),(4,2),
         (0,3),(1,3),(2,3),(3,3),(4,3),
         (0,4),(1,4),(2,4),(3,4),(4,4)]


def get_location():
    return random.sample(CELLS,3)

def move_player(player,move):
    x,y = player
    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(player):
    move = ["LEFT","RIGHT","UP","DOWN"]
    x,y = player
    if x == 0:
        move.remove("LEFT")
    if x == 4:
        move.remove("RIGHT")
    if y == 0:
        move.remove("UP")
    if y == 4:
        move.remove("DOWN")
    return move

def draw_map(player):
    print(" _" * 5)
    tile = "|{}"

    for cell in CELLS:
        x,y = cell
        if x < 4:
            line_end = ""
            if cell == player:
                output = tile.format("X")
            else:
                output = tile.format("_")
        else: 
            line_end = "\n"
            if cell == player:
                output = tile.format("X|{")
            else: 
                output = tile.format("_|")
        print(output, end=line_end)


def game_loop():
    monster,door, player = get_location()   
    while True:
        draw_map(player)
        valid_moves = get_moves(player)

        print("You're Currently in room {}".format(player))
        print("You can move {}".format(", ".join(valid_moves)))
        print("Enter QUIT to quit")
        monster,door,player = get_location

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

        if move == 'QUIT':
            break

        if move in valid_moves:
            player = move_player(player,move)
        else:
            input("\n ** Walls are hard! Don't run into them! **\n")
        clear_screen()


clear_screen()
print("Welcome to the dungeon!")
clear_screen()
game_loop()