Código
pd.cut(dados.Renda,
bins = classes,
labels = labels,
include_lowest = True)Retorno
0 A
1 A
2 A
3 A
4 A
..
76835 A
76836 A
76837 A
76838 A
76839 A
Name: Renda, Length: 76840, dtype: category
Categories (5, object): ['E' < 'D' < 'C' < 'B' < 'A']