save project

snake.py

@@ -19,22 +19,24 @@ down = pygame.image.load('down.png')
 x,y = 240,120
 position = [(180,90),(180,120),(210,120),(x,y)]
 
+setheading = 'right'
+snake_head = right
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
             # 接收到退出事件后退出程序
             exit()
         if event.type == locals.KEYDOWN:
-            if event.key == locals.K_RIGHT and setheading !=:"left":
+            if event.key == locals.K_RIGHT and setheading !="left":
                 setheading = 'right'
                 snake_head = right
-            if event.key == locals.K_LEFT and setheading !=:"right":
+            if event.key == locals.K_LEFT and setheading !="right":
                 setheading = 'left'
                 snake_head = left
-            if event.key == locals.K_UP and setheading !=:"down":
+            if event.key == locals.K_UP and setheading !="down":
                 setheading = 'up'
                 snake_head = up
-            if event.key == locals.K_DOWN and setheading !=:"up":
+            if event.key == locals.K_DOWN and setheading !="up":
                 setheading = 'down'
                 snake_head = down