Interfaces != Multiple Inheritance [was Re: python development practices?]

[Wade Leftwich]

Zope 2.4 includes an Interface module that can be used outside Zope.
It provides lots of nice introspection methods.

quoting the ZopeDevGuide:

from Interface import Base

class Hello(Base):
    """ The Hello interface provides greetings. """
    def hello(self, name):
        """ Say hello to the name """

class HelloComponent:
     __implements__ = Hello

     def hello(self, name):
         return "hello %s!" % name
#############

Hello looks like a class, but it's not:
>>> Hello
<Interface Hello at 109189c>
>>> type(Hello)
<type 'instance'>