is there a way to define a pure virtual base class in python

beyond_touch

is there any way to create a pure virtual base class like C++
or let a class declare it conform to some protocol like in Object-C

beyond_touch

I found a solution

1. from abc import ABCMeta
   
2. 
   
3. class MyABC(metaclass=ABCMeta):
   
4.     pass
   
5. 
   
6. MyABC.register(tuple)
   
7. 
   
8. assert issubclass(tuple, MyABC)
   
9. assert isinstance((), MyABC)
   

复制代码

http://docs.python.org/py3k/library/abc.html