save project

snake.py

@@ -62,7 +62,7 @@ while True:
         apple_y = 30*num2-30
     else:
         position.pop(0)
-    # 将背景图画上去
+    if x<0 or x>630 y<0 or y>450
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
     screen.blit(snake_head, position[-1])
@@ -72,7 +72,7 @@ while True:
 
     # 将果实画上去
     screen.blit(food, (apple_x, apple_y))
-    innfo = "Score:"+str(score)
+    info = "Score:"+str(score)
     text = my_font.render(info,True,(0,0,0))
     screen.blit(text,(540,10))
     # 刷新画面