d3 not a resolved reference

Hi all,

Loving Pycharm, trying to understand it fully so I can be as efficient as possible using it.  One of the problems I'm having is that it continually returns a warning about "Unresolved variable or type d3".  I've gotten d3 set up as a library, or I think I do.  What am I missing to resolve this problem?  Note, that when the code is executed, it runs correctly.  Image of error and library setup.