擅长:python、mysql、java
<p>只需在<code>concat</code>df1和df2之后执行<code>reindex</code></p>
<pre><code>df=pd.concat([df1,df2]).set_index('Area').reindex(mainlist).reset_index()
df
Out[91]:
Area Content
0 munnar NaN
1 ooty hill
2 coonoor hill
3 nilgri mount
4 wayanad NaN
5 coorg NaN
6 chera hill
7 hima mount
</code></pre>