Don't fail when docstrings have been stripped by -OO mode (#2473)
Don't fail when docstrings have been stripped by -OO mode (#2473)

* Don't fail when docstrings have been stripped by -OO mode

Fixes #2470

* Fix comment

* Clarify language
arokem/seaborn,mwaskom/seaborn,arokem/seaborn,mwaskom/seaborn