python-upgrade-all

#!/bin/bash

# Script to upgrade Python in all pyenv virtualenvs

newVersion=`pyenv install --list | egrep "^\s*[0-9]*\.[0-9]*(\.[0-9]*)?$" | tail -1 | xargs`
oldVersions=()
packageListPathPrefix="$HOME/Google Drive/System/Package Lists/python-"
packageListPathSuffix=".txt"
forceReinstall="false"

# Force reinstall will rebuild virtualenvs even if they use the latest Python
if [ "$1" == "--force-reinstall" ]; then
    forceReinstall="true"
fi

# Switch pyenv to system Python
pyenv global system

# Install latest Python
echo "Installing latest Python version..."
pyenv install "$newVersion" --skip-existing

# Rebuild Pyenv virtualenvs
for virtualenv in `pyenv virtualenvs --bare --skip-aliases`; do
    virtualenvVersion=${virtualenv%%/*}
    virtualenvName=${virtualenv##*/}
    if [ "$virtualenvVersion" != "$newVersion" ] || [ "$forceReinstall" == "true" ]; then
        echo "Rebuilding "$virtualenvName"..."
        if [ "$virtualenvVersion" != "$newVersion" ] && [[ ! " ${oldVersions[@]} " =~ " $virtualenvVersion " ]]; then
            oldVersions+=("$virtualenvVersion")
        fi
        echo "Removing "$virtualenvName"..."
        pyenv uninstall --force "$virtualenv"
        echo "Recreating "$virtualenvName"..."
        pyenv virtualenv "$newVersion" "$virtualenvName"
        pyenv global "$virtualenvName"
        echo "Upgrading base packages..."
        pip-upgrade
        packageListPath="${packageListPathPrefix}${virtualenvName}${packageListPathSuffix}"
        if [ -f "$packageListPath" ]; then
            echo "Reinstalling packages for "$virtualenvName" from "$packageListPath"..."
            pip install -r "$packageListPath"
        fi
    fi
done

# Switch pyenv to system Python
pyenv global system

# Uninstall old Python versions
for version in "${oldVersions[@]}"; do
    echo "Uninstalling "$version"..."
    pyenv uninstall --force "$version"
done