No module named 'virtualenvwrapper'

python linux ubuntu amazon-ec2 virtualenvwrapper
user1592380 picture user1592380 · Mar 19, 2015 · Viewed 53.4k times · Source

I am working to set up a Django project on Amazon EC2 with an Ubuntu 14.04 LTS instance. I want to write my code using Python 3. I've been advised that the best way to do this is to use virtualenvwrapper. I've installed virtualenvwrapper successfully and put

export WORKON_HOME=$HOME/.virtualenvs
export VIRTUALENVWRAPPER_PYTHON=/usr/bin/python3.4
export PROJECT_HOME=$HOME/Devel
source /usr/local/bin/virtualenvwrapper.sh

into my .bashrc file. Now I see:

 /usr/bin/python3.4: Error while finding spec for 'virtualenvwrapper.hook_loader' (<class 'ImportErro
 r'>: 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/python3.4 and that PATH is
 set properly.

How can I fix this?

Answer

tropicalfish picture tropicalfish · Mar 26, 2016

Instead of specifying a different python interpreter with -p flag, you can also config your desired interpreter as default.

According to virtualenvwrapper's documentation, virtualenvwrapper.sh finds the first python and virtualenv programs on the $PATH and remembers them to use later.

If your virtualenvwrapper is not installed on your OS's default python interpreter (/usr/bin/python), make sure you override the environment variables as below:

  • VIRTUALENVWRAPPER_PYTHON to the full path of your python interpreter
  • VIRTUALENVWRAPPER_VIRTUALENV to the full path of the virtualenv

For example, on my .bash_profile (Mac):

#virtualenvwrapper
export WORKON_HOME=$HOME/.virtualenvs
export VIRTUALENVWRAPPER_PYTHON=/Library/Frameworks/Python.framework/Versions/3.5/bin/python3
export VIRTUALENVWRAPPER_VIRTUALENV=/Library/Frameworks/Python.framework/Versions/3.5/bin/virtualenv
source /Library/Frameworks/Python.framework/Versions/3.5/bin/virtualenvwrapper.sh

Reload your new variables by running source ~/.bash_profile

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