擅长:python、mysql、java
<blockquote>
<p>Is it possible to transform this to oneliner using itertools, filter or something else?</p>
</blockquote>
<p>这里是“其他东西”,您可以使用<a href="https://stackoverflow.com/a/426168/4279">^{<cd1>} function</a>:</p>
<pre><code>index_of_y_in_x = index(y, x)
</code></pre>