--ini-enunciat
>>> from polinomi import Polinomi 
>>> from horner import horner
>>> p = Polinomi()
>>> p[9]=2
>>> horner(p,2)
1024.0
>>> horner(p,1)
2.0
>>> q = Polinomi()
>>> q[3]=1; q[1]=1; q[0]= 1
>>> horner(q,1)
3.0
>>> horner(q,2)
11.0
>>> horner(q,3)
31.0

--fi-enunciat