The next step would be to create something like a virtual environment to ensure no name clashes occur.
Create and enter the virtual environment
# With virtualenv (on Unix and OSx)
mkdir my-amazing-solar-project
cd my-amazing-solar-project
virtualenv virtualEnvName
source venv/bin/activate
# With virtualenv (on Windows)
mkdir my-amazing-solar-project
cd my-amazing-solar-project
virtualenv virtualEnvName
.\venv\Scripts\activate.bat
Once inside the virtualenv, you can proceed to install dependencies.
python -m pip install -e ."[dev]"
Dependencies are now installed, you can now run the tests to see if everything is running as it should.