擅长:python、mysql、java
<p>使用<a href="https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.merge.html" rel="nofollow noreferrer">^{<cd1>}</a>时,请确保选择正确的列,这样<code>df2</code>中的所有列也不会合并:</p>
<pre><code>keys = ['Start', 'Gene_Symbol']
intersection = df1.merge(df2[keys], on=keys)
</code></pre>
<pre><code> Composite Beta_value Chromosome Start End Gene_Symbol
0 cg00000109 0.660067 chr3 172198247 172198248 FNDC3B
1 cg00000165 0.660067 chr1 90729117 90729118 C3orf35
2 cg00000236 0.905679 chr8 42405776 42405777 VDAC3
</code></pre>