Using Windows/Python 3.7 and Pygame 1.9.4 is already installed, except I exited out of the terminal and can't find the version name to finish the installation. 
According to the book I'm following, I need to finish by typing in:
"python -m pip install --user pygame-[version name].whl"
I can't find the version name anywhere online. I remember it started with "pygame-18.0"
Edit: It works now! It was installed the whole time. Still not sure what the book wants me to do with the whl file thing, but if that raises problems, I'll just restart the whole process again. Thank you!
try pip3/pip install pygame
now the latest version of pygame is "pygame-1.9.4"
Pygame 1.9.4. Installation Trouble