>>> import pandas as pd
>>> df = pd.read_csv("esquirols.csv")
>>> from esquirols import activitat

--ini-enunciat

>>> activitat(df, 'McCarren Park', 'Running')
10
>>> activitat(df, 'Columbus Park', 'Climbing')
2
>>> activitat(df, 'Fort Tryon Park', 'Eating')
4

--fi-enunciat

>>> activitat(df, 'McCarren Park', 'Climbing')
12
>>> activitat(df, 'Highbridge Park', 'Eating')
3
>>> activitat(df, 'Marcus Garvey Park', 'Climbing')
20
>>> activitat(df, 'Madison Square Park', 'Foraging')
6