擅长:python、mysql、java
<p>我想您需要从<code>boolean indexing</code>顺道来<code>index</code>:</p>
<pre><code>census_df = ( pd.read_csv('census.csv').drop(census_df[(census_df['SUMLEV'] == 40)].index) )
</code></pre>
<p>但更好的方法是使用<a href="http://pandas.pydata.org/pandas-docs/stable/indexing.html#boolean-indexing" rel="nofollow noreferrer">^{<cd2>}</a>:</p>
^{pr2}$