Python virtual environment

I use Python virtualenv, virtualenvwrapper and autoenv.

Installation

$ sudo apt-get update
$ sudo apt-get install python-setuptools
$ sudo easy_install pip
$ sudo pip install virtualenv
$ sudo pip install virtualenvwrapper
$ sudo pip install autoenv

My virtualenv root is at ~/.virtualenvs, so update ~/.bashrc accordingly

export WORKON_HOME=$HOME/.virtualenvs
export PROJECT_HOME=$HOME/app
source /usr/local/bin/virtualenvwrapper.sh
source /usr/local/bin/activate.sh

Then create an .env file in the folder were the project root is located (for example "Traffic" is used below) with this content "workon Traffic".

Do "$ mkvirtualenv Traffic". When changing directory (cd) into the folder were the .env-file is located autoenv will automatically trigger the virtualenv.

To use Python3, use this command "$ mkvirtualenv --python=/usr/bin/python3 Traffic". To find the path to Python3, use "$ which python3"".

If autoenv is not used, activate the virtualenv by "$ workon Traffic", deactivate by "$ deactivate". After activating the virtualenv, install packages by (Traffic) "$ pip install requests" (for Python3 do "(Traffic) $ pip3 install requests").

Refer to documentation here.