擅长:python、mysql、java
<p>简单的合并</p>
<pre><code>df1.merge(df2, left_on='Feature', right_index=True)
Out[264]:
ID Feature Property1 Property2
0 ID1 Feature1 Property11 Property21
1 ID2 Feature2 Property12 Property22
3 ID4 Feature2 Property12 Property22
2 ID3 Feature3 Property13 Property23
</code></pre>