[Python-Dev] Single- vs. Multi-pass iterability

[Barry A. Warsaw]

>>>>> "AM" == Alex Martelli <aleax@aleax.it> writes:

    AM> The big question is rather: given that Isub inherits from
    AM> Isuper, does any object implementing Isub also implicitly
    AM> implement Isuper?

There's another issue that Jim Fulton likes to bring up, IIRC.  If
class Super implements IInterface, does class Sub(Super) also
(automatically) implement IInterface?

I could be totally misremembering, but I believe that Jim would say
"no".  Class Sub would have to explicitly declare that it also
implements IInterface.

-Barry