from re import A import pandas as pd df = pd.read_csv('sales.csv') r = pd.qcut(df.recency,q=4,labels=[4,3,2,1]) f = pd.qcut(df.frequency,q=4,labels=[1,2,3,4]) m = pd.qcut(df.monetary,q=4,labels=[1,2,3,4]) j = pd.concat([r,f,m],axis=1) df['RFMClass'] = j['recency'].astype(str)+j['frequency'].astype(...