Does Python support interfaces?

[Randall Parker]

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?