[EMAIL PROTECTED]: >In python , how to implement interface like the above?
Interfaces are lacking in Python, but an even more generic proposal is on its way: http://www.artima.com/weblogs/viewpost.jsp?thread=155123 In the mean time, interfaces have already been implemented in Zope 3: http://www.zope.org/Products/ZopeInterface -- René Pijlman "To find out what you can do with interfaces, see the interface interface, IInterface in the IInterface module." - Comment in Zope's Interface/__init__.py -- http://mail.python.org/mailman/listinfo/python-list