Python could not import the module virtualenvwrapper.hook_loader?

Question

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?

Answer 1

Installing virtualenv by both, pip and pip3 doesn't make any sense because installing it by any one shows virutalenvwrapper in both, pip list and pip3 list .

The right way is to copy the following code in your ~/.bashrc .

VIRTUALENVWRAPPER_PYTHON=$(which python3)

NOTE: Use the python version you want to use, in my case it's python3 .

Answer 2

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.

Answer 3

对于 MacOS，您需要将 VIRTUALENVWRAPPER_PYTHON=/usr/bin/python3 更改为 VIRTUALENVWRAPPER_PYTHON=/usr/local/bin/python3

Answer 4

This have solved my issue on macOS Monterey 2022:

Terminal

cd
nano .bashrc 

Code in file

export WORKON_HOME=~/.virtualenvs 
VIRTUALENVWRAPPER_PYTHON=/usr/local/bin/python3 
source /usr/local/bin/virtualenvwrapper.sh

save it

CTRL + x

y