<p>使用<a href="http://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.xs.html" rel="nofollow noreferrer">^{<cd1>}</a>:</p>
<pre><code>print (jkm_df.xs(201406, level=1))
px_settlement contract_code
assessment_date
2014-01-02 16.1 m14
</code></pre>
<p>如果需要,两个级别都使用参数<code>drop_level=False</code>:</p>
^{pr2}$
<p>带<a href="http://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.loc.html" rel="nofollow noreferrer">^{<cd3>}</a>的解决方案:</p>
<pre><code>print (jkm_df.loc(axis=0)[:, 201406])
px_settlement contract_code
assessment_date contract_serial
2014-01-02 201406 16.1 m14
</code></pre>
<p>另一个带有<a href="http://pandas.pydata.org/pandas-docs/stable/advanced.html#using-slicers" rel="nofollow noreferrer">slicers</a>的解决方案:</p>
<pre><code>print (jkm_df.loc[(slice(None), 201406), :])
px_settlement contract_code
assessment_date contract_serial
2014-01-02 201406 16.1 m14
</code></pre>