[Python-3000] PEP 3119 - Introducing Abstract Base Classes

[Jason Orendorff]

On 4/26/07, Guido van Rossum <guido at python.org> wrote:
> - Where should PartiallyOrdered and TotallyOrdered live?

Could someone please post some sample code using either of
these?  I don't see what they're good for.

Here's my failed attempt:

  def my_max(a : TotallyOrdered, b : TotallyOrdered):
      return a if a >= b else b

But this is both too loose (consider my_max(7, "spam"))
and too strict (consider my_max([1, 2], [2, 1])).

-j