如何将categorical转换成可以运算的类型？

问题遇到的现象和发生背景

我需要对两列数据分箱，并且分别根据分箱结果赋值，再把赋值后的结果相加
我用qcut对2列数据进行分箱，分成5组，分别赋值0-4

A01['A'], cut_bin = pd.qcut(A01['RDS'],q=5,labels=['0','1','2','3','4'],retbins = True)
A01['B'], cut_bin = pd.qcut(A01['SEINS'],q=5,labels=['0','1','2','3','4'],retbins = True)
A01['C']=A01.A+A01.B

运行结果及报错内容

Traceback (most recent call last):
  File "C:\Users\ASUS\PycharmProjects\A01-2021-Strategy\main.py", line 19, in <module>
    A01['STRA']=A01.RDSV+A01.SEINSV+A01.GROWSV
  File "D:\Anaconda\lib\site-packages\pandas\core\ops\common.py", line 69, in new_method
    return method(self, other)
  File "D:\Anaconda\lib\site-packages\pandas\core\arraylike.py", line 92, in __add__
    return self._arith_method(other, operator.add)
  File "D:\Anaconda\lib\site-packages\pandas\core\series.py", line 5526, in _arith_method
    result = ops.arithmetic_op(lvalues, rvalues, op)
  File "D:\Anaconda\lib\site-packages\pandas\core\ops\array_ops.py", line 218, in arithmetic_op
    res_values = op(left, right)
TypeError: unsupported operand type(s) for +: 'Categorical' and 'Categorical'
进程已结束,退出代码1

我想要达到的结果

我想把A和B的值相加，但是程序报错提示Categorical类型不能相加，怎么处理呢？
请问可以把categorical转成成可以运算的类型吗？

你最后一行做一下类型转换：

A01['C']=A01['A'].astype(str)+A01['B'].astype(str)