BUG: Allow plotting boolean values
- [ ] closes #23719
- [ ] tests added / passed
- [ ] passes `black pandas`
- [ ] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [ ] whatsnew entry

somehow even after i merge with master, this still fails... but in the meantime i see other PRs passing all checks, what would be the reason that fails this one? @jreback @TomAugspurger help or explanation will be very appreciated! What versions of pytest & pytest-xdist are present in that failing build? I suppose it's `pytest-5.0.1` and `xdist-1.28.0`? @TomAugspurger 

![Screen Shot 2019-08-07 at 11 20 09 PM](https://user-images.githubusercontent.com/9269816/62658816-ef5c0280-b969-11e9-9082-fddac6f70200.png)
 Yea, those are incompatible. https://github.com/pandas-dev/pandas/pull/27809
is fixing hopefully.

On Wed, Aug 7, 2019 at 4:21 PM Kaiqi Dong <notifications@github.com> wrote:

> I suppose it's pytest-5.0.1 and xdist-1.28.0? @TomAugspurger
> <https://github.com/TomAugspurger>
>
> [image: Screen Shot 2019-08-07 at 11 20 09 PM]
> <https://user-images.githubusercontent.com/9269816/62658816-ef5c0280-b969-11e9-9082-fddac6f70200.png>
>
> —
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 still fails, should `pytest` and `xdist` version also be changed in `ci/deps/azure-37-locale.yaml` and `ci/deps/travis-36-slow.yaml`? since this check fails in my case. @TomAugspurger I checked last PR 27809 in which `azure-36-locale` was changed. Hmm perhaps. I'm surprised to see that, but maybe defaults doesn't have the newest pytest-xdist version. ok, i just try updating the version of those two packages to see if the pr could pass all checks this time, if so, i will open another pr to separate this issue @TomAugspurger one more check is passed... by this travis one still could not... i think i will leave this here for now... I don't have much knowledge about CI, and really have no idea what could lead to this @TomAugspurger  OK I'll take a look later. I think I saw

```

 [31m [1m_ TestCategoricalSeriesAnalytics.test_drop_duplicates_categorical_non_bool[True-datetime64[D]]
_ [0m
[gw0] linux -- Python 3.6.6 /home/travis/miniconda3/envs/pandas-dev/bin/python
[XPASS(strict)] GH#7996
 [31m [1m_ TestCategoricalSeriesAnalytics.test_drop_duplicates_categorical_non_bool[False-datetime64[D]]
_ [0m
[gw0] linux -- Python 3.6.6 /home/travis/miniconda3/envs/pandas-dev/bin/python
[XPASS(strict)] GH#7996
 [31m [1m_ TestCategoricalSeriesAnalytics.test_drop_duplicates_categorical_non_bool[None-datetime64[D]]
_ [0m
[gw0] linux -- Python 3.6.6 /home/travis/miniconda3/envs/pandas-dev/bin/python
[XPASS(strict)] GH#7996

```

in another PR too.

On Thu, Aug 8, 2019 at 2:31 PM Kaiqi Dong <notifications@github.com> wrote:

> one more check is passed... by this travis one still could not... i think
> i will leave this here for now... I don't have much knowledge about CI, and
> really have no idea what could lead to this @TomAugspurger
> <https://github.com/TomAugspurger>
>
> —
> You are receiving this because you were mentioned.
> Reply to this email directly, view it on GitHub
> <https://github.com/pandas-dev/pandas/pull/27665?email_source=notifications&email_token=AAKAOIRYJ45IOQ3Z7TIHFELQDRYBTA5CNFSM4IIALEHKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOD34VKSA#issuecomment-519656776>,
> or mute the thread
> <https://github.com/notifications/unsubscribe-auth/AAKAOIVZISBSLPDY6J7KYYDQDRYBTANCNFSM4IIALEHA>
> .
>
 @TomAugspurger it used to pass all the checks if the versions were changed to newer ones for `pytest` and `xdist`, but if I keep it as is, then the `Windows py37_np141` fails again. Not sure if this is the reason fails the PR, or should I open another PR to fix this version issue? https://github.com/pandas-dev/pandas/pull/27845 is trying to get them all. it finally passes all checks @TomAugspurger thanks for fixing CI!! ^^ Thanks @charlesdong1991. Sorry about all the CI failures!