擅长:python、mysql、java
<p>试试<code>explode</code>,然后<code>map</code></p>
<pre><code>s = pd.Series(l).explode()
s.index = s.groupby(level=0).transform('first')
df['List_val'] = df['Value'].map(dict(zip(s,s.index)))
df
Out[36]:
Value List_val
0 1 1
1 3 1
2 5 5
3 9 8
</code></pre>