擅长:python、mysql、java
<p>替换此代码:</p>
<pre><code>if somemodel not in somemodels:
print ("SomeModel is not already in :" cleaned_up_list)
cleaned_up_list.append(somemodel)
</code></pre>
<p>签署人:</p>
^{pr2}$
<p>因为在第一段代码中,测试将始终为true,因为您正在测试元素是否存在于迭代的列表中。在</p>