Improvments to dungon.py

# Dungon Game.
import random

# Define some game paramerers

Dungon_size_x = 4    # Size of dungon
Dungon_size_y = 4

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

def get_locations():
    monster = random.choice(CELLS)
    door = random.choice(CELLS)
    start = random.choice(CELLS)
    weapon = random.choice(CELLS)

    if monster == door or monster == start or start == door or start == weapon:
        return get_locations()

    return monster, door, start, weapon

def move_player(player, move):
    x, y = player

    if move == 'LEFT':
        x -= 1

    elif move == 'RIGHT':
        x += 1

    elif move == 'UP':
        y -= 1

    elif move == 'DOWN':
        y += 1

    return x, y


def get_moves(player):
    moves = ['LEFT', 'RIGHT', 'UP', 'DOWN']

    if player[0] == 0:
        moves.remove('LEFT')
    if player[0] == 3:
        moves.remove('RIGHT')
    if player[1] == 0:
        moves.remove('UP')
    if player[1] == 3:
        moves.remove('DOWN')

    return moves

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

    for idx, cell in enumerate(CELLS):
        if idx in [3, 7, 11, 15]:
            if cell == player:
                print(tile.format('X|'))
            else:
                print(tile.format('_|'))
        else:
            if cell == player:
                print(tile.format('X'), end='')
            else:
                print(tile.format('_'), end='')   

monster, door, player, sword = get_locations()
has_sword = False     #player hasn't found the sword yet.
print("""
    Welcome to the dungon!
    Find your way to the door. 
    But watch out for the hungry grue! """)

while True:
    moves = get_moves(player)

    draw_map(player)
    print("You are in room{}".format(player))
    print("You can move {}".format(moves))
    print("enter 'QUIT' to Quit") 

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

    if move == 'QUIT':
        break

    if move == 'CHEAT':
        print("monster is in {}".format(monster))
        print("sword is in {}".format(sword))
        print("door is at {}".format(door))
        continue

    if move in ['LEFT', 'RIGHT', 'UP', 'DOWN']:
        if move in moves:
            player = move_player(player, move)
        else:
            print("** Walls are hard. Stop walking into them! **")
            continue
    else:
        print("** What??")
        continue

    if player == door:
        print("You found the Door. You have escaped\n")
        break

    elif player == monster:
        if has_sword == True:
            print("** You have slain the grue!")
        else:
            print("Chomp, Chomp: you just got eaten by the grue")
            break

    elif player == sword:
        print("** You found a sword!")
        has_sword = True