Game of 15

gameof15.py

from os import system
board = [[15, 14, 13, 12], [11, 10, 9, 8], [7, 6, 5, 4], [3, 1, 2, 0]]
answer = [[1, 2, 3, 4], [5, 6, 7, 8], [9, 10, 11, 12], [13, 14, 15, 0]]

r, c = 3, 3
step = 0

def print_row(row):
    for cell in row:
        if cell != 0:
            print(f"{cell:3}", end=" ")
        else:
            print("   ", end=" ")
    print()

def print_board(board):
    system('clear')
    print(f'step: {step} ')
    for row in board:
        print_row(row)
    print()


def move_down(board):
    global r, c, step
    if r > 0:
        board[r][c] = board[r - 1][c]
        board[r - 1][c] = 0
        r = r - 1
        step = step + 1


def move_up(board):
    global r, c, step
    if r < 3:
        board[r][c] = board[r + 1][c]
        board[r + 1][c] = 0
        r = r + 1
        step = step + 1


def move_right(board):
    global r, c, step
    if c > 0:
        board[r][c] = board[r][c - 1]
        board[r][c - 1] = 0
        c = c - 1
        step = step + 1


def move_left(board):
    global r, c, step
    if c < 3:
        board[r][c] = board[r][c + 1]
        board[r][c + 1] = 0
        c = c + 1
        step = step + 1


print_board(board)
while True:
  command = input()
  if command == 'd':
    move_right(board)
  elif command == 'a':
    move_left(board)
  elif command == 'w':
    move_up(board)
  elif command == 's':
    move_down(board)
  else:
    continue
  print_board(board)
  if board == answer:
    print('You Win, congratulations')
    break