擅长:python、mysql、java
<p>您可以将<code>a</code>和<code>b</code>转换为<code>Index</code>s,然后使用<a href="https://pandas.pydata.org/pandas-docs/stable/generated/pandas.Index.isin.html" rel="nofollow noreferrer">^{<cd4>} method</a>确定哪些行共享:</p>
<pre><code>import pandas as pd
a = pd.DataFrame({0:[1,2,3],1:[10,20,30]})
b = pd.DataFrame({0:[0,1,2,3],1:[0,1,20,3]})
a_index = a.set_index([0,1]).index
b_index = b.set_index([0,1]).index
mask = ~a_index.isin(b_index)
result = a.loc[mask]
print(result)
</code></pre>
<p>收益率</p>
<pre><code> 0 1
0 1 10
2 3 30
</code></pre>