擅长:python、mysql、java
<p>你可以用一套理解方法来做这件事,比如:</p>
<h3>代码:</h3>
<pre><code>uniques = {animal for row in data for animal in row[1]}
</code></pre>
<h3>测试代码:</h3>
<pre><code>data = [[1, ["cat", "dog"]],
[2, ["dog", "mouse", "elephant"]],
[3, ["mouse", "giraffe"]]]
uniques = {animal for row in data for animal in row[1]}
print(uniques)
</code></pre>
<h3>结果:</h3>
<pre><code>{'cat', 'giraffe', 'mouse', 'dog', 'elephant'}
</code></pre>