save project

snake.py

@@ -56,10 +56,11 @@ while True:
         y += 30
     position.append((x, y))
     if x == apple_x and y == apple_y:
-        apple_x = random.randint(0,630)
-        apple_y = random.randint(0,450)
-        if apple_x%30==0 and apple_y%30==0:
-            break
+        while True:
+            apple_x = random.randint(0,630)
+            apple_y = random.randint(0,450)
+            if apple_x%30==0 and apple_y%30==0:
+                break
     position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))