如何用Python开发拼图游戏(11)

<

=

 

2

 

and

 

board

[

r

][

c

 + 

1

is

 

None:

  # 判断右面

                

board

[

r

][

c

] = 

None



                

board

[

r

][

c

 + 

1

] = 

current_square