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

User · Answer

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

User · Answer

virtualenvwrapper now lets you specify the python executable without the path   So  on OSX at least mkvirtualenv --python python3 nameOfEnvironment will suffice

User · Answer

You can make virtualenvwrapper use a custom Python binary instead of the one virtualenvwrapper is run with  To do that you need to use VIRTUALENV PYTHON variable which is utilized by virtualenv     export VIRTUALENV PYTHON  usr bin python3   mkvirtualenv -a myproject myenv Running virtualenv with interpreter  usr bin python3 New python executable in myenv bin python3 Also creating executable in myenv bin python  myenv   python Python 3 2 3  default  Oct 19 2012  19 53 16    GCC 4 7 2  on linux2 Type  help    copyright    credits  or  license  for more information

User · Answer

This post on the bitbucket issue tracker of virtualenvwrapper may be of interest  It is mentioned there that most of virtualenvwrapper s functions work with the venv virtual environments in Python 3 3

User · Answer

I find that running   export VIRTUALENVWRAPPER PYTHON  usr bin python3   and   export VIRTUALENVWRAPPER VIRTUALENV  usr bin virtualenv-3 4   in the command line on Ubuntu forces mkvirtualenv to use python3 and virtualenv-3 4  One still has to do   mkvirtualenv --python  usr bin python3 nameOfEnvironment   to create the environment  This is assuming that you have python3 in  usr bin python3 and virtualenv-3 4  in  usr local bin virtualenv-3 4

User · Answer

The latest version of virtualenvwrapper is tested under Python3 2  Chances are good it will work with Python3 3 too

User · Answer

On Ubuntu  using mkvirtualenv -p python3 env name loads the virtualenv with python3   Inside the env  use python --version to verify

User · Answer

You can add this to your  bash profile or similar   alias mkvirtualenv3  mkvirtualenv --python  which python3     Then use mkvirtualenv3 instead of mkvirtualenv when you want to create a python 3 environment

User · Answer

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

[python] virtualenvwrapper and Python 3

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