Issue
If Python could not import the module virtualenvwrapper.hook_loader, and I get this message
check that virtualenvwrapper has been installed for
VIRTUALENVWRAPPER_PYTHON=/usr/bin/python3 and that PATH is
set properly.
How do I start to set it up in Debian 9?
Solution
You have to install virtualenvwrapper separately for different versions of Python:
pip install virtualenvwrapper
pip3 install virtualenvwrapper
The first one is for Python 2.7, the second for Python 3.
Answered By - phd