BUG: duplicate indexing with embedded non-orderables (#17610)
Bug in ``Series`` containing duplicate indexing when gets embedded non-orderables or orderables, raises error or returns unexpected result. (:issue:`17610`)

- [x] closes # 17610
- [x] tests added / passed
- [x] passes `git diff upstream/master -u -- "*.py" | flake8 --diff`
- [x] whatsnew entry

Hello @gloryfromca! Thanks for updating the PR.



 - In the file [`pandas/tests/series/test_indexing.py`](https://github.com/pandas-dev/pandas/blob/528d2046262534b442a8b3aec5017357d8b679b0/pandas/tests/series/test_indexing.py), following are the PEP8 issues :

> [Line 562:1](https://github.com/pandas-dev/pandas/blob/528d2046262534b442a8b3aec5017357d8b679b0/pandas/tests/series/test_indexing.py#L562): [W293](https://duckduckgo.com/?q=pep8%20W293) blank line contains whitespace



##### Comment last updated on October 12, 2017 at 05:45 Hours UTC