def add_walls(self):
        "Put walls around the entire perimeter of the grid."
        for x in range(self.width):
            self.add_thing(Wall(), (x, 0))
            self.add_thing(Wall(), (x, self.height-1))
        for y in range(self.height):
            self.add_thing(Wall(), (0, y))
            self.add_thing(Wall(), (self.width-1, y))
def add_walls(self):
        "Put walls around the entire perimeter of the grid."
        for x in range(self.width):
            self.add_thing(Wall(), (x, 0))
            self.add_thing(Wall(), (x, self.height-1))
        for y in range(self.height):
            self.add_thing(Wall(), (0, y))
            self.add_thing(Wall(), (self.width-1, y))
def add_walls ( self ) : for x in range ( self . width ) : self . add_thing ( Wall ( ) , ( x , 0 ) ) self . add_thing ( Wall ( ) , ( x , self . height - 1 ) ) for y in range ( self . height ) : self . add_thing ( Wall ( ) , ( 0 , y ) ) self . add_thing ( Wall ( ) , ( self . width - 1 , y ) )
Put walls around the entire perimeter of the grid.
Put walls around the entire perimeter of the grid .