擅长:python、mysql、java
<pre><code>df=pd.DataFrame({'col1':['N11','N12','N11','N14'],'col2':[1, 3, 5, 7],'col3':[11,13, 15, 17]})
print("N11 max=",df['col3'][df['col1']=='N11'].max())
print("N11 Min=",df['col3'][df['col1']=='N11'].min())
</code></pre>
<p>输出:N11最大值=15
N11最小值=11</p>