ENH: Add StataWriter 118 for unicode support

[bashtage]

Add StataWriter with unicode support

• closes Support writing unicode characters in df.to_stata() #23573
• tests added / passed
• passes black pandas
• passes git diff upstream/master -u -- "*.py" | flake8 --diff
• whatsnew entry

[jbrockmendel]

@kshedden can you double-check this? It looks fine to me, but I think you're better-informed on this than I am.

[kshedden]

Sorry, I'm not familiar at all with the writers.

[pep8speaks]

Hello @bashtage! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

There are currently no PEP 8 issues detected in this Pull Request. Cheers! 🍻

Comment last updated at 2019-12-31 16:38:17 UTC

[WillAyd]

I think looks OK generally. Would have been easier to review if the refactor / f-strings were done separate

[bashtage]

I think looks OK generally. Would have been easier to review if the refactor / f-strings were done separate

I'm sure this is true. Just binged on them a bit.

[bashtage]

scikit-learn related failure

[jbrockmendel]

LGTM. @TomAugspurger are we letting the sklearn thing in travis block merging?

[TomAugspurger]

Nope, it's OK to ignore.

[jreback]

lgtm. very minor comments, pls rebase and ping on green.

[TomAugspurger]

CI failure looked unrelated.

________________ TestRegistration.test_registering_no_warning _________________
[gw1] win32 -- Python 3.7.5 C:\Miniconda\envs\pandas-dev\python.exe

self = <pandas.tests.plotting.test_converter.TestRegistration object at 0x000002411CB02788>

    def test_registering_no_warning(self):
        plt = pytest.importorskip("matplotlib.pyplot")
        s = Series(range(12), index=date_range("2017", periods=12))
        _, ax = plt.subplots()
    
        # Set to the "warn" state, in case this isn't the first test run
        register_matplotlib_converters()
        with tm.assert_produces_warning(None) as w:
>           ax.plot(s.index, s.values)

Merged master to see if its fixed.

[jbrockmendel]

CI failure again looks unrelated (and azure won't let me re-run). merged master to force re-run.

[bashtage]

@jreback @jbrockmendel green.

[jbrockmendel]

thanks @bashtage