擅长:python、mysql、java
<p>尝试将<code>and</code>更改为<code>or</code>。在</p>
<pre><code>[elem for elem in listionary if (elem.get('name')!='paul' or elem.get('city')!='madrid')]
</code></pre>
<p>记住<a href="https://en.wikipedia.org/wiki/De_Morgan%27s_laws" rel="noreferrer">de morgan's laws</a>。非正式地说:当你否定一个布尔表达式时,除了用“==”切换之外,还必须用<code>and</code>和{<cd2>}切换{<cd1>}!=". 在</p>