/usr/bin/python3: Error while finding spec for 'virtualenvwrapper.hook_loader' (<class 'ImportError'>: No module named 'virtualenvwrapper')
PythonVirtualenvVirtualenvwrapperPython Problem Overview
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the actual error:
root@alexus:~# echo "source /usr/local/bin/virtualenvwrapper.sh" >> ~/.bashrc
root@alexus:~# source ~/.bashrc
/usr/bin/python3: Error while finding spec for 'virtualenvwrapper.hook_loader' (<class 'ImportError'>: No module named 'virtualenvwrapper')
virtualenvwrapper.sh: There was a problem running the initialization hooks.
If Python could not import the module virtualenvwrapper.hook_loader,
check that virtualenvwrapper has been installed for
VIRTUALENVWRAPPER_PYTHON=/usr/bin/python3 and that PATH is
set properly.
root@alexus:~#
I'm following how to to the teeth, what am I doing wrong?
Python Solutions
Solution 1 - Python
I faced similar problem, when using python3 with virtualenvwrapper,
sudo apt-get install python3-pip
Then install virtualenv and virtualenvwrapper from pip3,
sudo pip3 install virtualenv virtualenvwrapper
then source it again,
source $HOME/.bashrc
Solution 2 - Python
Thanks to @Alexander, I was able to fix my issue by changing the line in ~/.bashrc
:
export VIRTUALENVWRAPPER_PYTHON=/usr/bin/python3
to
export VIRTUALENVWRAPPER_PYTHON=/usr/bin/python
due to backwards compatibility.
Solution 3 - Python
I encountered a similar issue with virtualenvwrapper
complaining not being to find virtualenvwrapper.hook_loader
. I was able to narrow down to this particular line in my .bash_profile
source /usr/local/bin/virtualenvwrapper.sh
as seen below
$ source /usr/local/bin/virtualenvwrapper.sh
/usr/local/opt/python3/bin/python3.6: Error while finding module specification for 'virtualenvwrapper.hook_loader' (ModuleNotFoundError: No module named 'virtualenvwrapper')
virtualenvwrapper.sh: There was a problem running the initialization hooks.
If Python could not import the module virtualenvwrapper.hook_loader,
check that virtualenvwrapper has been installed for
VIRTUALENVWRAPPER_PYTHON=/usr/local/bin/python3 and that PATH is
set properly.
After some trial and error, it turns out that a reinstallation of the virtualenvwrapper
package resolved it. This was a manifest of the fact that I recently upgrade python3 (from version 3.5.2 to 3.6.1) via homebrew and in turn it broke virtualenvwrapper's shell script that hardcoded references to the older version of python3 (in my case it was 3.5.2). In short, this below line should fix it (at least in my case it did).
pip3 install virtualenvwrapper
Solution 4 - Python
I had already installed virtualenv so just needed to run
pip3 install virtualenvwrapper
Solution 5 - Python
In macOS Sierra,
If you installed virtualenv
package using pip3
,
add following to .bash_profile
export VIRTUALENVWRAPPER_PYTHON=/usr/local/bin/python3
or
export VIRTUALENVWRAPPER_PYTHON=$(which python3)
after that every new virtualenvironment you created using workon myvenv
uses python3
as python interpreter
Solution 6 - Python
In my case, there was somehow a mismatch between pip3 and python3 (because I have multiple pythons installed). This worked for me:
sudo python -m pip install virtualenvwrapper
Solution 7 - Python
> export VIRTUALENVWRAPPER_PYTHON=/usr/bin/python
good choice, but you already knew /usr/bin/python is 2.7
If you want to use version 3
> sudo apt-get install python3-pip
and logout & login
Solution 8 - Python
check your python3
installation directory:
which python3
If installed by brew you should get:
/usr/local/python3
export python version to be used virtualenvwrapper:
export VIRTUALENVWRAPPER_PYTHON=/usr/local/python3
source your shell configuration file:
bash
source .bashrc
zsh
source .zshrc
Solution 9 - Python
This error appeared for me after running brew update
and brew upgrade
on mac os high sierra.
The issue was resolved by reinstalling virtualenvwrappper i.e. pip install virtualenvwrapper
.
Solution 10 - Python
I've got this error for entirely different reasons, but since I ended up on this thread, I gather somebody might find this useful. So in my case, it turned out that my script was attempting to activate the virtual environment while I was already on it (the workon
statement is issued from my .profile
file). And so the solution was to simply deactivate
the environment first and then run the script.
Solution 11 - Python
Here is what for me solved
Error while finding module specification for 'virtualenvwrapper.hook_loader' (ModuleNotFoundError: No module named 'virtualenvwrapper')
obtained in creating and activating environments.
In my .bashrc
I had wrote:
export VIRTUALENVWRAPPER_PYTHON=python3
Changing it to:
export VIRTUALENVWRAPPER_PYTHON=$(which python3)
solved the problem for me.
NOTE: If you activate an environment and run which python3
, you will find out that the python run is the one of the environment, not the global one specified in VIRTUALENVWRAPPER_PYTHON
Solution 12 - Python
If you're here after a macOS update, and installed python3 via brew, try re-linking your version of python3
brew link [email protected]
brew link [email protected]
- etc
Solution 13 - Python
On my computer, I ran sudo apt install python-pip
and then pip install virtualenvwrapper
but on my settings, I set it as follows:
export WORKON_HOME=$HOME/.Envs
export VIRTUALENVWRAPPER_PYTHON=$(which -a python3)
source $HOME/.local/bin/virtualenvwrapper.sh
That got rid of the error and note that I am using python3 and I use pip3 as my default
Solution 14 - Python
I had this warning after a brew upgrade, which updated python3 packages and brew-installed python3.
I found a pip3 and python3 version mismatch as Evan Thomas hinted:
❯ which python3 && python3 --version
/usr/bin/python3
Python 3.8.2
❯ which pip3 && pip3 --version
/usr/local/bin/pip3
pip 21.0.1 from /usr/local/lib/python3.9/site-packages/pip (python 3.9)
Running brew link [email protected]
as snakesNbronies suggested removes the warning.
Solution 15 - Python
I had a similar issue on Mac OS Catalina 10.15.6 after I installed vim
and macvim
using following:
brew install vim && brew install macvim
which I believe was the cause for the problem.
While workon
worked but always gave an error message as below:
~ $ workon loom
/Library/Frameworks/Python.framework/Versions/3.6/bin/python3: Error while finding module specification for 'virtualenvwrapper.hook_loader' (ModuleNotFoundError: No module named 'virtualenvwrapper')
/Library/Frameworks/Python.framework/Versions/3.6/bin/python3: Error while finding module specification for 'virtualenvwrapper.hook_loader' (ModuleNotFoundError: No module named 'virtualenvwrapper')
(loom) ~ $
What worked for me finally was:
- adding
export VIRTUALENVWRAPPER_PYTHON=/usr/local/bin/python3
to.bash_profile
sudo pip3 install virtualenvwrapper
Solution 16 - Python
try to install python-is-python3:
1.Update the package index:
sudo apt-get update
2.Install python-is-python3 deb package:
sudo apt-get install python-is-python3