Fix python virtualenv after python update

fix_virtualenv

#!/usr/bin/env bash

ENV_PATH="$(dirname "$(dirname "$(which pip)")")"
SYSTEM_VIRTUALENV="$(which -a virtualenv|tail -1)"

BAD_ENV_PATHS="/usr/local"

echo "Ensure the root of the broken virtualenv:"
echo "    $ENV_PATH"

if [[ -z "$ENV_PATH" ]] || [[ "$ENV_PATH" = *"$BAD_ENV_PATHS"* ]]; then
    echo "The root path above doesn't seems to be a valid one."
    echo "Please make sure you ACTIVATED the broken virtualenv."
    echo "‼️  Exiting for your safety... (thanks @laymonk for reporting this)"
    exit 1
fi

read -p "‼️  Press Enter if you are not sure (y/N) " -n 1 -r
echo
if [[ $REPLY =~ ^[Yy]$ ]]; then
    echo "♻️  Removing old symbolic links......"
    find "$ENV_PATH" -type l -delete -print
    echo "💫  Creating new symbolic links......"
    $SYSTEM_VIRTUALENV "$ENV_PATH"
    echo "🎉  Done!"
fi

thank you soo much @tevino due to a brew install mistake. I spent all day fixing my python, virtualenv and this was the last piece. I was not looking forward to trying to fix all those symlinks for all my projects.

Thanks, man. Perfect solution!

man you just saved me from spending 2 more hours thank you very much

This script is awesome. Thank you for posting it. Way better than my hunt and peck method.

The script switched the venv from Python 3 to Python 2.7 on my machine, so I had to delete and rebuild the virtualenv. Might be good to use only python3.

Works like a charm! Thank you!

Works perfectly! Thanks!

yep this is magical, thank you

Thank you!

Thanks!

Thank you!

Worked very well, thanks!

Thanks!

Worked like a charm! Had to deal with this issue multiple times now and this is the first working solution without creating a complete new env from scratch.

Thank you very much indeed!

I found a better solution. Just recreate the virtualenv the same way you would normally create virtualenv. But use the folder path instead of the name you want for the virtualenv.

Example:

virtualenv -p python3.5 /path/to/your/existing/venv/

I had changed my system's Python version to 3.7.7 but the venv was python 3.5.2. It stopped working but this fixed it!

Than you @olitomas. That was great