擅长:python、mysql、java
<p>将它们分组并列出它们的内容</p>
<pre><code>df.groupby(['make', 'year', 'model', 'engine']).agg(list).reset_index()
make year model engine part
0 alfa romeo 1954 giulietta 1.3l l4 [B, A]
1 alfa romeo 1955 giulietta 1.3l l4 [B, A]
2 alfa romeo 1956 giulietta 1.3l l4 [B, A]
3 alfa romeo 1957 giulietta 1.3l l4 [B, A]
4 alfa romeo 1958 giulietta 1.3l l4 [B, A]
5 alfa romeo 1960 giulietta 1.3l l4 [A]
</code></pre>