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I have not found how yet. Meanwhile am currently using like this:

@abc.abstractmethod
def pure_virtual_method(self, a, b):
    """
      Method description.
      :param a: Whatever...
      :param b: Whatever...
      :returns: Whatever...
    """
    #   This line should never be executed.
    raise NotImplementedError(
        'pure virtual method specification called instead of any '
        'implementation')
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  • stackoverflow.com/questions/4714136/… Commented Jan 21, 2015 at 14:45
  • 1
    Argh, I hate it when the better question has the worse or fewer answers. At least this question has made an attempt. Commented Jan 21, 2015 at 14:48
  • And so? What is missing in this for the behavior you want? Just the words "pure " and "virtual"? Commented Jan 21, 2015 at 15:33
  • This would mean that after ten years I finally ended up learning how to develop, if it wasn't a snippet of code compliant with a language designed for its code to be canonical... It's more desirable annotating with something like '@abc.trulyabstractmethod', just using a 'pass' statement instead of raising an exception, requiring this syntax, and not letting the code start the execution, instead of raising an exception in a process already executing the user code. Commented Jan 21, 2015 at 15:48
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