import pandas as pd sales = pd.read_csv('sales.csv') x = pd.qcut(sales['recency'],[0,0.25,0.5,0.75,1],[4,3,2,1]).astype(str) y = pd.qcut(sales['frequency'],[0,0.25,0.5,0.75,1],[1,2,3,4]).astype(str) z = pd.qcut(sales['monetary'],[0,0.25,0.5,0.75,1],[1,2,3,4]).astype(str) sales['RFMClass'] = x+y+z p...