save project

snake.py

@@ -12,6 +12,7 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
+left
 x,y=240,120
 position=[(180,90),(180,120),(210,120),(x,y)]
 
@@ -23,14 +24,15 @@ while True:
             exit()
     if event.type==locals.KEYDOWN:
         if event.key==locals.K_RIGHT and setheading != "left":setheading='right'
-        if event.key==locals.K_LEFT and 
-
+        if event.key==locals.K_RIGHT and setheading != "left":setheading='right'                       
+        if event.key==locals.K_RIGHT and setheading != "left":setheading='right'
     x+=30
     position.append((x,y))
     position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
 
+
     # 将贪吃蛇的身体画上去
 
     screen.blit(right,position[-1])