import pandas as pd pd.set_option('display.width',300) pd.set_option('display.max_rows',None) pd.set_option('display.max_columns',None) df = pd.read_csv('sales.csv') quantiles = df.quantile([0.25,0.5,0.75]) def score(x, col): q1, q2, q3 = quantiles[col] return 4 if x <= q1 else 3 if x <= q2 el...