擅长:python、mysql、java
<p>我想你可以用<a href="http://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.pivot.html" rel="nofollow">^{<cd1>}</a>和<a href="http://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.fillna.html" rel="nofollow">^{<cd2>}</a>:</p>
<pre><code>print (df)
name group weight
0 a e 60
1 t g 70
2 p d 80
3 f d 40
4 e e 50
5 l g 30
6 a d 20
print (df.pivot(index='name', columns='group', values='weight').fillna(''))
group d e g
name
a 20 60
e 50
f 40
l 30
p 80
t 70
</code></pre>