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I upgraded brew and now I'm getting this message every time I open the terminal:

/usr/bin/python: 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/python and that PATH is
set properly.

I tried the suggested solutions posted by Railslide and Sudipta Basak from the following post, but neither are fixing this issue for me: problems with python and virtualenvwrapper after updating: No module named virtualenvwrapper

Executing "/usr/local/bin/pip3 install virtualenv virtualenvwrapper" gives me the "Requirement already satisfied" message.

I'm on Mac, and this is breaking a few things for me, like Juypter Notebook that I had installed with Anaconda, so any help would be appreciated!

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  • What version of Python are you actually running in your default shell? Commented Jan 6, 2020 at 17:49
  • @Makoto Version 2.7.10 Commented Jan 6, 2020 at 17:53
  • What does echo $PATH give you and what order is your Python executables (e.g. does Python 2 come before Python 3)? Commented Jan 6, 2020 at 17:56
  • Running echo $PATH is giving me usr/bin/sudo:/Users/_myName_/bin:/usr/local/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin. This may be a silly question, but how do I check the order of my Python executables? Looking in /usr/bin/, I am seeing python. Looking in /usr/local/bin/, I see python3 as Alias. Commented Jan 6, 2020 at 18:03
  • If Python 2 is in /usr/bin and Python 3 is in /usr/local/bin, then /usr/local/bin needs to come before /usr/bin in your PATH. Seeing Python 3 as an alias (and aliases have very explicit meanings in *nix) could be problematic. Commented Jan 6, 2020 at 18:19

1 Answer 1

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You have to install virtualenvwrapper for the instance of pip that goes along with the instance of python that you are using.

For example, my ~/.zprofile contains these setup commands:

export WORKON_HOME=$HOME/.virtualenvs
export VIRTUALENVWRAPPER_PYTHON=/opt/homebrew/bin/python3
export VIRTUALENVWRAPPER_VIRTUALENV=/opt/homebrew/bin/virtualenv
source /opt/homebrew/bin/virtualenvwrapper.sh

Because I am using /opt/homebrew/bin/python3, I need to use the corresponding version of pip:

/opt/homebrew/bin/pip3 install virtualenvwrapper
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