擅长:python、mysql、java
<p>你也可以用熊猫来做这个:</p>
<pre><code>>>> import pandas as pd
>>> df = pd.DataFrame(List, columns=['Category', 'Value'])
>>> df
Category Value
0 CategoryA 6.03
1 CategoryA 14.97
2 CategoryA 1.00
3 CategoryX 4.32
4 CategoryD 3.60
>>> df[df['Category'] == 'CategoryA']['Value'].sum()
22.0
</code></pre>
<p>或者如果您想查看每个类别的总和:</p>
<pre><code>>>> df.groupby('Category')['Value'].sum()
Category
CategoryA 22.00
CategoryD 3.60
CategoryX 4.32
Name: Value, dtype: float64
</code></pre>