[Types-sig] Interface PEP

[Paul Prescod]

It's important to realize that both sides of the current discussion are
working on interfaces. Michel's interfaces are defined declaratively in
a class-like syntax. Mine are basically functional interfaces (in fact
they could really be functions instead of classes).

Your interface objects have an implicitly generated implementedBy
method. Mine have an explicit method.
-- 
Python:
    Programming the way
    Guido
    indented it.
       - (originated with Skip Montanaro?)