擅长:python、mysql、java
<p>我想你可以用<a href="http://pandas.pydata.org/pandas-docs/stable/generated/pandas.cut.html" rel="nofollow">^{<cd1>}</a>:</p>
<pre><code>import pandas as pd
df = pd.DataFrame({'urbanrate':[10,20,25,30,40,75,80,100]})
print (df)
urbanrate
0 10
1 20
2 25
3 30
4 40
5 75
6 80
7 100
bins = [0, 24.999, 74.999, 1000]
group_names = [1,2,3]
df['urban'] = pd.cut(df['urbanrate'], bins, labels=group_names)
print (df)
urbanrate urban
0 10 1
1 20 1
2 25 2
3 30 2
4 40 2
5 75 3
6 80 3
7 100 3
</code></pre>