Fix Python – How do I use installed packages in PyCharm?

In PyCharm, I’ve added the Python environment /usr/bin/python. However,
from gnuradio import gr

fails as an undefined reference. However, it works fine in the Python interpreter from the command line.
GNURadio works fine with python outside of Pycharm. Everything is installed and configured how I want it.
Gnuradio is located at /usr/local/lib/py….