擅长:python、mysql、java
<p>试试这个:</p>
<pre><code>In [29]: df1.groupby('Group').ffill().groupby(['Group','Age','City']).Name.apply(' '.join)
Out[29]:
Group Age City
1 24.0 Seattle Alice Marie Smith
2 26.0 Portland Mallory Bob Doe
Name: Name, dtype: object
</code></pre>