Does Python support interfaces?

[rgparker at west.net.bbs]

I'm quite new to Python. For those who are familiar with Java interfaces:
Does Python have a similar facility?

Can one declare interfaces, then declare that a class implements some
interface, instantiate an object of that class type, and then cast it to
an interface that it is declared to support and then pass it around as a
reference to that interface type and make calls to methods of that
interface type?