PEP 318

[Paul Rubin]

Eyal Lotem <gnupeaker at yahoo.com> writes:
> You are not supposed to be looking for it, IMHO.
> Generators follow the Sequence protocol and are to be
> treated as sequences.  Thus, you should simply make it
> clear in the
> function-name/conventions/interface-documentation that
> the function returns a sequence.  Whether that
> sequence is implemented via a generator or not is an
> implementation detail.

But that's bogus.  Python is dynamically typed which means that a
normal function can return whatever it wants, sequence or
non-sequence.  A generator function can't return anything, it can only
yield.