Load dynamic python libraries

Hi,

I currently have a package with a lot of .so files set in my PYTHONPATH. I've also added this path to my project interpreter however PyCharm can't rebuild full package tree.

For example, if I run `from rdkit.Chem.rdchem import Mol` from my python shell, everything works fine. However, inside my PyCharm editor I have a warning Cannot find reference 'rdchem' in '__init__.py'.

Am I missing something here ?