擅长:python、mysql、java
<p>你自己说过“垃圾收集”。所以不是<code>tappos</code>,而是放<code>self.tappos</code>。在</p>
<pre><code>#tappos = [0 for x in range(7)]
self.tappos = [0 for x in range(7)]
...
#tappos[a] = DropDown(root)
self.tappos[a] = DropDown(root) # And so on. You get the picture.
...
</code></pre>