Note that I use python2.
You can follow instruction in the link but change a little bit.
From
    >brew install python3 hg sdl sdl_image sdl_mixer sdl_ttf portmidi
To
    >brew install python hg sdl sdl_image sdl_mixer sdl_ttf portmidi
And
From
    >pip3 install hg+http://bitbucket.org/pygame/pygame
To
    >pip install hg+http://bitbucket.org/pygame/pygame
Restart may br required.