[Pandas-dev] pandas 0.18.x and pandas 1.0 roadmap

[Joris Van den Bossche]

Hi all,

Interesting discussions!

My expertise as pandas contributor is not really in the core part, so I
cannot really comment on that. But for me, as we think of a pandas 1.0, a
possible clean-up of the existing user facing API is an important aspect to
discuss I think (regardless of a clean-up and rewrite of the internals, as
this should not affect too much of the existing API? (apart from new
features)).
In the light of how to keep (or improve on) pandas easy to learn, clear to
understand, consistent and yet powerful.

There are some points listed in the Pandas Development Roadmap
<https://docs.google.com/document/d/151ct8jcZWwh7XStptjbLsda6h2b3C0IuiH_hfZnUA58/edit?ts=568725eb#>
under 'pandas 1.0', coming from
https://github.com/pydata/pandas/issues/10000, but possibly other points as
well.

Probably the most prominent example is the indexing API, and specifically
[] / __getitem__. Some time ago I made an overview of some of its warts
that have grown over time: https://github.com/pydata/pandas/issues/9595
I don't say we have to change something about this (because it will break a
lot of existing code), but we should at least discuss it a bit more
thoroughly I think.


As for the timeline, I like the idea of limiting the number of releases for
the 0.x line. Maybe we will like to do a 0.19.x as well (eg to introduce
some features to improve the transition to 1.0), or depending on how long
it takes to shape up 1.0, but that is something that can be discussed later
if that comes up I think.

Regards,
Joris


2016-01-03 20:41 GMT+01:00 Wes McKinney <wesmckinn at gmail.com>:

> Per discussions we've been having here
>
>
> https://docs.google.com/document/d/151ct8jcZWwh7XStptjbLsda6h2b3C0IuiH_hfZnUA58/edit?ts=568725eb#heading=h.qm48l6dargmd
>
> I started this document to solicit a high level plan for the last 0.x
> release and where we can develop a plan for what will become pandas
> 1.0
>
>
> https://docs.google.com/document/d/1K3uVluD9qNn9nLp6oRjIwP7qillysw820wfulJY3BiU/edit#
>
> Let me know what you think of this idea -- I'll have more bandwidth
> this year to be involved and I'm starting to look at what a 2nd ed of
> Python for Data Analysis should look like.
>
> Relatedly: I'm assembling enough basic plumbing so that I can give you
> all a demo of how the libpandas / C/C++ native core will help us
> better hide implementation details and fix problems like
> integer/boolean missing data in a clean and extensible way. It will
> also help establish a pattern for adding new data types to pandas
> (which may or may not rely on NumPy). I'll follow up about it when I
> get a bit more stuff working; probably take me a few more days at
> least.
>
> thanks!
> Wes
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