擅长:python、mysql、java
<p>简单的方法</p>
<pre><code>L = [['John','Sayyed'], [ 'John' , 'Simon'] ,['bush','trump']]
L[0].extend([x for x in L[1] if x not in L[0]])
L.pop(1)
print(L)
</code></pre>
<p>看</p>
<p><a href="https://docs.python.org/3/tutorial/datastructures.html#list-comprehensions" rel="nofollow noreferrer">List Comprehensions</a></p>
<p><a href="https://stackoverflow.com/questions/252703/difference-between-append-vs-extend-list-methods-in-python">Append vs Extend</a></p>