擅长:python、mysql、java
<pre><code>for X in x:
if X in alphabet: print(X)
</code></pre>
<p>或者</p>
<pre><code>print(*[X for X in x if X in alphabet])
</code></pre>
<p>或者</p>
<pre><code>print(' '.join([X for X in x if X in alphabet]))
</code></pre>
<p>都给你你想要的(打印字母表中的x)</p>