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Cheatsheet: pyenv, virtualenvwrapper, and pip
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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 (or ~/.zshrc):

eval "$(pyenv init -)"

Install pyenv-virtualenvwrapper

brew install pyenv-virtualenvwrapper
pyenv virtualenvwrapper

Add the following to ~/.bash_profile (or ~/.zshrc):

export PYENV_VIRTUALENVWRAPPER_PREFER_PYVENV="true"

Restart your shell or source your profile:

source ~/.bash_profile

or

source ~/.zshrc

Usage

List available Python versions you can install:

pyenv install --list

Install a Python version

pyenv install 3.7.6
pyenv install 3.8.1

See what Python versions you have installed:

pyenv versions

Switch Python versions globally or locally:

pyenv global 3.7.6
pyenv local 3.8.1

Creating a local version for a project should create a .python-version file with the project version (this should be checked in)

Create a virtualenv:

mkvirtualenv my-venv

Install a package with pip:

pip install ipython

Capture dependancies in git:

pip freeze > requirements.txt
git add requirements.txt
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