Why is python saying I have "no module named venv"?

Question

I installed virtual env with sudo pip install virtualenv but when I run python -m venv flask I'm still getting this: /usr/bin/python: No module named venv

Versions, if that's relevant:

pip 1.5.6 from /usr/lib/python2.7/dist-packages (python 2.7)
Python 2.7.9

what am I missing here?

Answer 1

Since you are on Python 2, you need to execute using the virtualenv module that you installed.

First step, as you originally tried to do, but this time you specify the "virtualenv" module and the name of the virtualenv. In this case flask:

python -m virtualenv flask

Then you activate your virtualenv like this:

source flask/bin/activate

Then install flask with pip inside the virtualenv

pip install flask

If you want to deactivate your virtualenv, simply type:

deactivate

If running on Python 3, the venv command is built-in and you can simply do:

python3 -m venv flask

Note, depending on how your Python 3 is installed, your python execution command might differ. You could be running it as python3, python3.5, python3.6.