擅长:python、mysql、java
<p>IIUC将<code>transform</code>与<code>nunique</code>一起使用</p>
<pre><code>df1=df[df.groupby(['Name','Location']).Product.transform('nunique')>1]
Name Location Product Type number
0 Greg 1 Fruit grape 1
1 Greg 1 Fruit apple 2
2 Greg 1 Bakery bread 5
3 Greg 1 Bakery roll 8
14 Sam 7 Fruit orange 13
15 Sam 7 Bakery roll 14
</code></pre>