>>> from comerciant import Comerciant
>>> from personatge import Personatge
>>> c = Comerciant('Pep', 3, 16)
>>> isinstance(c, Comerciant) and isinstance(c, Personatge)
True
>>> Comerciant.valor_vida
5
>>> c.valor_vida
5
>>> c.comprar_vides(2)
>>> c.vides
5
>>> c.monedes
6
>>> c.comprar_vides(2)
>>> c.vides
5
>>> c.monedes
6

--fi-enunciat

>>> c.comprar_vides(1)
>>> c.vides
6
>>> c.monedes
1
>>> c.monedes = 100
>>> c.comprar_vides(4)
>>> c.vides
10
>>> c.monedes
80