擅长:python、mysql、java
<p>可以将<a href="https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.where.html" rel="nofollow noreferrer">^{<cd1>}</a>与<a href="https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.notna.html" rel="nofollow noreferrer">^{<cd2>}</a>一起使用</p>
<pre><code>df2.where(df1.notna())
Col1 Col2 Val1 Val2 Val3
asd ASYL 7 NaN 17
ppq CONE NaN 19 19
DA HU 5 14 NaN
</code></pre>