--ini-enunciat

>>> from clientela import mitjana_clients
>>> from datetime import time

>>> it = iter([ (time(9,11), 2), (time(10,4), 7), (time(11,29), 5), (time(12,25), 3) ])
>>> print(f"{mitjana_clients(it):0.3f}")
5.057
>>> it = iter([ (time(9,11), 4), (time(10,4), 2), (time(11,29), 4), (time(12,25), 1) ])
>>> print(f"{mitjana_clients(it):0.3f}")
3.124

--fi-enunciat