How to switch python versions on bash

$ pyenv global 2.7.13

or

$ pyenv global 3.6.0

(Depending on the version I need)

$ pyenv local x.x.x is to set the directory-specific python version. To unset it and use the globally set version instead,

$ pyenv local --unset

Required setup:

• $ brew install pyenv
• $ pyenv install 2.7.13
• $ pyenv install 3.6.0
• Add the following line to the top of .bash_profile
  eval "$(pyenv init -)"