擅长:python、mysql、java
<p>这是一条单行线:</p>
<p>它使用for循环理解创建嵌套列表。你知道吗</p>
<pre class="lang-py prettyprint-override"><code>List1 = ['A','B','C']
List2 = ['ab', 'ac', 'ad', 'ae']
out = [[an + bn for bn in List2] for an in List1]
print(out)
# >>> [['Aab', 'Aac', 'Aad', 'Aae'], ['Bab', 'Bac', 'Bad', 'Bae'], ['Cab', 'Cac', 'Cad', 'Cae']]
</code></pre>