擅长:python、mysql、java
<p>使用<a href="https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.core.groupby.GroupBy.apply.html" rel="nofollow noreferrer">GroupBy.apply</a>:</p>
<pre><code>df.groupby(['A','B'],sort=False)['C'].apply(lambda x:x.sort_values()).reset_index(level=['A','B'])
</code></pre>
<hr/>
<pre><code> A B C
0 1 1 1
1 1 1 2
2 1 1 3
4 2 1 1
5 2 1 2
3 2 1 3
7 1 2 1
6 1 2 2
8 1 2 3
</code></pre>