virtualenvwrapper and Python 3

Question

I installed python 3.3.1 on ubuntu lucid and successfully created a virtualenv as below

virtualenv envpy331 --python=/usr/local/bin/python3.3

this created a folder envpy331 on my home dir.

I also have virtualenvwrapper installed.But in the docs only 2.4-2.7 versions of python are supported..Has anyone tried to organize the python3 virtualenv ? If so, can you tell me how ?

Answer 1

On Ubuntu; using mkvirtualenv -p python3 env_name loads the virtualenv with python3.

Inside the env, use python --version to verify.

Answer 2

If you already have python3 installed as well virtualenvwrapper the only thing you would need to do to use python3 with the virtual environment is creating an environment using:

which python3 #Output: /usr/bin/python3
mkvirtualenv --python=/usr/bin/python3 nameOfEnvironment

Or, (at least on OSX using brew):

mkvirtualenv --python=`which python3` nameOfEnvironment

Start using the environment and you'll see that as soon as you type python you'll start using python3

Answer 3

I added export VIRTUALENV_PYTHON=/usr/bin/python3 to my ~/.bashrc like this:

export WORKON_HOME=$HOME/.virtualenvs
export VIRTUALENV_PYTHON=/usr/bin/python3
source /usr/local/bin/virtualenvwrapper.sh

then run source .bashrc

and you can specify the python version for each new env mkvirtualenv --python=python2 env_name