I created a VirtualEnv in PyCharm to install my Python packages. I wanted to install this fork of the django project from GitHub.
https://github.com/django-nonrel/dj
I was with the same problem, all i did was : Configure the project interpreter to the Python3 inside the venv/scripts you are using the pip install. Remember to activate the venv. That's it , now you can use the pip install on pycharm or on prompot. The problem is that even with the "venv/lib/sitepackeges" in the your project's sys.path the pycharm looks only for the packages where the project interpreter is