擅长:python、mysql、java
<p>一个选项是<a href="https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.pivot_table.html" rel="nofollow noreferrer">^{<cd1>}</a>指定不同的aggfuncs</p>
<pre><code>df.pivot_table(index=df.Sector, values='Raised_By', aggfunc=['count', 'nunique', set])
</code></pre>
<hr/>
<pre><code> count nunique set
Raised_By Raised_By Raised_By
Sector
A 4 2 {Messi, Xavi}
B 3 2 {Ramos, Ronaldo}
C 5 3 {Oven, Ronaldo, Beckham}
</code></pre>