[Python-Dev] One-line abstractmethod function?

Alexander Belopolsky alexander.belopolsky at gmail.com
Thu Dec 5 19:56:25 CET 2013

On Thu, Dec 5, 2013 at 1:24 PM, Guido van Rossum <guido at python.org> wrote:

> How would you get the docstrings in? It seems cramming that much on a
> single line doesn't help readability (even though I agree there is a
> fair amount of boilerplace).

One way to reduce the amount of boilerplate code is to make abstractmethod
to supply raise NotImplementedError body when none is given.  Then you can

class Foo:
    def do_bar(self):
         """perform bar"""

instead of

class Foo:
    def do_bar(self):
         """perform bar"""
         raise NotImplementedError

The docstring will be required when skipping the body which is probably a
good thing.
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