SAFINA3D

Update (For R21 and +)

	1- Download https://bootstrap.pypa.io/get-pip.py.
	2- Download the c4dpy version matching your Cinema 4D version. (Already included in R21 and +)
	3- Move c4dpy and get-pip.py in the Cinema 4D folder.
	4- Open a shell to the Cinema 4D folder:
		|_ Window: Type cmd in the top path and press Enter.
		|_ Mac: Open a new shell, then with cd navigate to your Cinema 4D folder. (You can drag and drop the path).
	5- Run this command line c4dpy get-pip.py. This will execute the get-pip script which will, download and install the pip module.
	6- Now you can start to play with pip c4dpy -m pip install pygame. c4dpy allow to runs any module with the -m argument see c4dpy commandline. 
  

Source: plugincafe

    1- Go to Cinema 4D python's directory
    2- If "pip" is not installed yet, download the get-pip.py file from https://bootstrap.pypa.io/get-pip.py
    3- Install pip (command line): .\python get-pip.py 
    4- Install pygame : .\python -m pip install pygame