1. Install pyenv brew install pyenv
2. Install a few different pythons pyenv install 3.6.0 pyenv install 3.5.2 pyenv install 2.7.who-cares
3. Install direnv brew install direnv
4. If you're using zsh add the following to your ~/.zshrc: echo 'eval "$(direnv hook zsh)"' >> ~/.zshrc
5. If you're using bassh add the following to your ~/.bashrc: echo 'eval "$(direnv hook bash)"' >> ~/.bashrc
6. Copy .direnvrc into ~/

You now have everything setup to use direnv.

Now, time to actually use it.

1. Create a directory, I usually put this in ~/workspace, others prefer !/projects. mkdir ~/projects/w00t
2. Create the file ~/projects/w00t/.envrc echo "use python 3.6.0" > ~/projects/w00t/.envrc
3. Go into that directory and say "yes, I trust this .envrc". You only need to do this when your .envrc file changes. cd ~/projects/w00t direnv allow This will cause a new python virtualenv to be created in ~/projects/w00t/.direnv

Now anytime you cd into ~/projects/w00t or a directory below that the virtualenv will automatically be enabled for you.

w00t!