save project

snake.py

@@ -56,9 +56,10 @@ while True:
         y += 30
     position.append((x, y))
     if x == apple_x and y == apple_y:
-        apple_x =random.randint(0,22)
-        apple_y =random.randint(0,16)
-        
+        num1 = random.randint(1,22)
+        num2 = random.randint(1,16)
+        apple_x = 30*num1 - 30
+        apple_y = 30*num2 - 30
     else:
         position.pop(0)
     # 将背景图画上去