<p>将<a href="http://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.loc.html" rel="nofollow noreferrer">^{<cd1>}</a>与<code>mean</code>一起使用:</p>
<pre><code>dataset['new measure'] = dataset.loc[:, 'Feature 1':'Feature 12'].mean(axis=1)
</code></pre>
<p><strong>样本</strong>:</p>
<pre><code>dataset = pd.DataFrame({'A':list('abcdef'),
'Feature 1':[4,5,4,5,5,4],
'Feature 2':[7,8,9,4,2,3],
'Feature 3':[1,3,5,7,1,0],
'Feature 4':[5,3,6,9,2,4],
'F':list('aaabbb')})
#print (dataset)
dataset['new measure'] = dataset.loc[:, 'Feature 1':'Feature 4'].mean(axis=1)
print (dataset)
A F Feature 1 Feature 2 Feature 3 Feature 4 new measure
0 a a 4 7 1 5 4.25
1 b a 5 8 3 3 4.75
2 c a 4 9 5 6 6.00
3 d b 5 4 7 9 6.25
4 e b 5 2 1 2 2.50
5 f b 4 3 0 4 2.75
</code></pre>