擅长:python、mysql、java
<p>迭代数据结构时不应修改它。在</p>
<p>总之,这是一个更简洁、更高效的代码来执行您的操作:</p>
<pre><code>items = list(listobj.getItems())
rendered = set((int(i) for i in request.POST['rendered'].split(',')))
unrendered = [item for item in items if item.id not in rendered]
</code></pre>