擅长:python、mysql、java
<p>您可以使用<code>groupby</code>,获取值并将它们转换为序列。你知道吗</p>
<pre><code>df.groupby(['code','fruit'])['subcode'].apply(
lambda x: x.values
).apply(pd.Series)
.add_prefix('subcode_')
subcode_0 subcode_1 subcode_2
code fruit
100 berries 100A 100B 100C
200 tropical 200A 200B NaN
300 tropical 300A NaN NaN
400 berries 400A NaN NaN
500 nuts 500A NaN NaN
</code></pre>