import pandas as pd sales = pd.read_csv('sales.csv') r1 = sales['recency'].quantile(q = 0.25) r2 = sales['recency'].quantile(q = 0.5) r3 = sales['recency'].quantile(q = 0.75) r4 =sales['recency'].max() r_bins =[0,r1,r2,r3,r4] r_label = [4,3,2,1] f1 = sales['frequency'].quantile(q = 0.25) f2 = sales[...