擅长:python、mysql、java
<p>使用<a href="https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.nsmallest.html" rel="nofollow noreferrer">^{<cd1>}</a>:</p>
<pre><code>df[df['test_a']=='OK'].nsmallest(1, 'metric_e')
</code></pre>
<p>输出:</p>
^{pr2}$