Cheatsheet: pyenv, virtualenvwrapper, and pip

pyenv+virtualenv.md

Cheatsheet: pyenv, virtualenvwrapper, and pip

Installation (for Mac OS)

Install pyenv with brew

brew update
brew install pyenv

Add the following line to ~/.bash_profile:

eval "$(pyenv init -)"

Install pyenv-virtualenvwrapper

brew install pyenv-virtualenvwrapper
pyenv virtualenvwrapper

Add the following to ~/.bash_profile:

export PYENV_VIRTUALENVWRAPPER_PREFER_PYVENV="true"

Restart your shell or source your profile:

source ~/.bash_profile

Install pyenv-pip-rehash

git clone https://github.com/yyuu/pyenv-pip-rehash.git ~/.pyenv/plugins/pyenv-pip-rehash

Usage

List available Python versions you can install:

pyenv install --list

Install a Python version

pyenv install 2.7.8
pyenv install 3.4.1

See what Python versions you have installed:

pyenv versions

Switch Python versions globally or locally:

pyenv global 2.7.8
pyenv local 2.7.8

Create a virtualenv:

mkvirtualenv my-venv

Install a package with pip:

pip install ipython

First you need to have installed virtualenvwrapper with pip
pip install virtualenvwrapper

You don't want to use mkvirtualenv with pyenv. It won't show up when you do 'pyenv virtualenvs' so that will be aggravating.

Something like this is the way to go:
pyenv virtualenv 3.6.3 espstuff

This guy's cheatsheet is nice: https://github.com/malexer/cheatsheets/blob/master/pyenv.md

Note that lsvirtualenv works to show the virtual environments made with mkvirtualenv. Seems nice :). Re: https://virtualenvwrapper.readthedocs.io/en/latest/command_ref.html

For those newbies out there when it says "Add the following to ~/.bash_profile:" just add >>~/.bash_profile to the end of the command they list.