side-by-side python 2 and python 3

[[w]]

Hi, I'm a long time user of virtualenvwrapper and love it. Thanks to all those who help make it possible!

i'm starting to do side-by-side work in python2 and python3. (i.e. some projects req python 2 and some req python 3)

How do i use virtualenvwrapper with this requirement?

Do I just install one virtualenvwrapper (either for 2 or for 3) and just set the python binary accordingly at time of virtual env creation?

[Jason Myers]

You can install virtualenvwrapper for which ever python you desire, and use it to create a virtualenv for whatever python you want at the time of creation. For example, mkvirtualenv --python=/path/to/python3 nameOfEnvironment would make a python3 virtualenv even if virtualenvwrapper was installed in python2.

Cheers,

Jason

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[[w]]

awesome. thanks for the confirmation.

[Carl Karsten]

question: we need to maintain 2 VEs right? 
One for each python version.

so one requirements.txt but if we add a package we need to run both pip and pip3 to update each VE.

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Carl K

[Jason Myers]

Yes or use something like tox for multiple version testing

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[Jason Myers]

Sorry sent that too soon, you need to activate the python2 environment and pip install in it, then activate the python3 environment and pip install in it as well.