Start by adding docstrings to the colletions ABCs.
Look at improving help() to clearly show the required abstract methods.

There is just a little more work to do on this.

1) The class level docstrings needs to display which methods are required.  Sequence.__doc__ already does a good job of this but most of the other classes are missing docstrings or don't specific the needed methods.

2) Methods like Sequence.count and Mapping.__eq__ already have a good docstrings but there is nothing for most of the other methods.  The docstring should be modeled on that for the corresponding methods in the concrete classes (list.__getitem__ for example).

I would be very interested and motivated to work on this. I'll start by taking a look at the pointers Raymond gave. If anyone can chime in with some more information / guidance that would be awesome.

Michael are you still interested in doing this, if not can I take it on?

Benjamin, are you still interested in working on this?

Hi Raymond,

I'm working with Ben on the EnHackathon project (https://enhackathon.github.io/) and am planning on working on this issue. Is that alright? Please do say if there's anything extra wanted or if you have any guidance (this is my first time contributing to python).

Hi Raymond - here's a first attempt at adding class-level docstrings, based off the format of Sequence.__doc__. Apologies if some things are not well worded etc.

It looks like all of the non-magic methods have docstrings already but if you think the magic methods need docstrings then I will add them.

Closing this due to lack of interest.