DOC: updated base.py and datetimes.py in core/indexes for PR08
Hello @willpeppo! Thanks for updating this PR. We checked the lines you've touched for [PEP 8](https://www.python.org/dev/peps/pep-0008) issues, and found:





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

##### Comment last updated at 2020-06-05 05:11:37 UTC Thanks @willpeppo 