擅长:python、mysql、java
<p>结果是你在计算<code>X or Y</code>,只给你<code>X</code>。然后,计算出<code>Cat or Dog or..</code>,只给你<code>Cat</code>,因为它不是0。在</p>
<p>你想要的是:</p>
<pre><code>if X in ("Cat","Dog", "Fish", "Bird") or Y in ("Cat","Dog", "Fish", "Bird"):
#taa daa!
</code></pre>