classes and interfaces

[s99999999s2003 at yahoo.com]

hi
i come from a non OO environment. now i am learning about classes. can
i ask, in JAva, there are things like interface. eg
public interface someinterface {
   public somemethod ();
   ....
   ...
}

In python , how to implement interface like the above? is it just
define a class??

class someinterface:
     def somemethod: blah....

thanks