stock = [['P01', 'Pencil', '0.45', '120'],
['P02', 'Ruler', '0.99', '40'],
['P03', 'Eraser', '0.30', '0']]
print(stock[1][1])
40 P02 Ruler Pencil item = ['P04', 'Glue stick', '1.25', '15']
price = float(item[2])
print(price * 4)
5 5.0 1.251.251.251.25 60.0 You can still revise this topic