求助：pandas模块cut函数中labels问题
0
悬赏园豆：10
[待解决问题]
最近学习pandas，其中：
ages = [20,22,25,27,21,23,37,31,61,45,41,32]
bins=[18,25,35,60,100]
group_names = ['Youth','YouthAdult','MiddleAged','Senior']
pd.cut(ages,bins,labels=group_names)
[Youth, Youth, Youth, YouthAdult, Youth, ..., YouthAdult, Senior, MiddleAged, MiddleAged, YouthAdult]
Length: 12
Categories (4, object)：[MiddleAged < Senior < Youth < YouthAdult]
MiddleAged < Senior < Youth < YouthAdult应该为排序为：Youth < YouthAdult<MiddleAged < Senior，我试了几次发现这里的排序是按照字母的顺序来排的，不是自定义的箱名顺序，请问一下大神为什么会出现这样的结果？
