>>> import pandas as pd
>>> df = pd.read_csv('pantalons.csv', parse_dates=['Data'])

--ini-enunciat

>>> from preum import preu_mitja
>>> p = preu_mitja(df, 'XL', 'home', 'Centric Brands LLC')
>>> print(f"{p:.2f}")
22.67
>>> p = preu_mitja(df, 'M', 'dona', 'POPPYS KNITWEAR PRIVATE LIMITED')
>>> print(f"{p:.2f}")
17.82
>>> p = preu_mitja(df[:10], 'S', 'unisex', 'TCE JEANS CO.LTD')
>>> print(f"{p:.2f}")
0.00

--fi-enunciat

>>> p = preu_mitja(df, 'S', 'unisex', 'TCE JEANS CO.LTD')
>>> print(f"{p:.2f}")
17.62
>>> p = preu_mitja(df, 'XL', 'home', 'POPPYS KNITWEAR PRIVATE LIMITED')
>>> print(f"{p:.2f}")
22.96
>>> p = preu_mitja(df, 'L', 'dona', 'Centric Brands LLC')
>>> print(f"{p:.2f}")
16.80
>>> p = preu_mitja(df, 'S', 'dona', 'HUGO BOSS AG')
>>> print(f"{p:.2f}")
22.12
>>> p = preu_mitja(df, 'L', 'unisex', 'SIYARAM SILK MILLS LIMITED')
>>> print(f"{p:.2f}")
24.90