Hi!

I prepare a little improve. I added some samples usage, some clarification and delete some whitespace unnecessary.

Attach patch. 

Regards

Double spaces between sentences increase readability. This is not a bug.

Since abstractclassmethod and like are deprecated and should not be used in new code, I do not see a value of extending their docstrings. Too verbose docstrings make using the module help less convenient. I would rather remove existing examples from docstrings. The module documentation contains more modern examples.

> Double spaces between sentences increase readability. This is not a bug.

hmm ok. I can see other docstring with not double spaces. But I will ignore. 

> Since abstractclassmethod and like are deprecated and should not be used in new code, I do not see a value of extending their docstrings. 

Ok, you are right. 

> Too verbose docstrings make using the module help less convenient. I would rather remove existing examples from docstrings. The module documentation contains more modern examples.

Do you say that is convenient remove the examples? I can do it! But in defense of the examples on docstring I think those are good, because the are the most quickly reference when coding and those are use by IDE.

These examples teach you how to use abstractclassmethod and similar decorators. But first, docstrings are not tutorial, and second, you should not use them in new code at all, because they are deprecated.

New changeset 5c117dd227e1b4c4f0a62564d8592f1ba45c91eb by Serhiy Storchaka in branch 'master':
bpo-35609: Remove examples for deprecated decorators in the abc module. (GH-11355)
https://github.com/python/cpython/commit/5c117dd227e1b4c4f0a62564d8592f1ba45c91eb

Hi Serhiy, 

A little question. Is there a planned version to remove the deprecated?

No plan for removal.  See https://bugs.python.org/issue28886#msg282582

> No plan for removal.  See https://bugs.python.org/issue28886#msg282582

Thanks!