I am making a data system. I have all of the code and arduino files, I just need help with modules/packages (ie. which directories to put them in so they can communicate with one another, installing and importing older versions). I need to use PyQt4, pyserial, and pyqtgraph. But for pyqtgraph I need sip, and am having trouble with that. I am working on a Mac, running macOS Sierra10.12.6.