[WIP] Annotate DataFrame (Part 3)
- [x] part of #26792 
- [ ] tests added / passed
- [x] passes `black pandas`
- [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry

closed as stale. @vaibhavhrt ping if you wish to continue. Sorry been really busy last few weeks. Will be busy next few days as well,
but I do wish to continue and complete it, just give me a few days I will
reopen the PR.

On Mon, 21 Oct, 2019, 1:54 PM Simon Hawkins, <notifications@github.com>
wrote:

> closed as stale. @vaibhavhrt <https://github.com/vaibhavhrt> ping if you
> wish to continue.
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 removing from draft, otherwise I keep forgetting about it. Will try it get it done fast now. closing as stale, ping if you want to continue.  @WillAyd are we working on this (and https://github.com/pandas-dev/pandas/issues/26792)? I can help out here, I really want to see type checking with a df. @stangirala this PR specifically is stale; if you have contributions you'd like to make for that feel free to push a separate PR @WillAyd can I use this PR as a template?