A bash script to wrap Python's `venv`

venv.sh

# You can append the following functions to your `.profile` file

function venv_help() {
    echo "venv list ....... list environments"
    echo "venv del myenv .. delete 'myenv'"
    echo "venv off ........ deactivate the current environment"
    echo "venv myenv ...... create 'myenv' if it doesn't exist then activate it;"
    echo "                   just activate it otherwise"
}

function venv() {
    case $1 in
        list)
            if ! [ -z $2 ]
            then
                venv_help
            else
                ls $HOME/.venv
            fi
            ;;
        off)
            if ! [ -z $2 ]
            then
                venv_help
            else
                if [[ $(which python) = $HOME/.venv/* ]]
                then
                    deactivate
                fi
            fi
            ;;
        del)
            if [ -z $2 ]
            then
                venv_help
            else
                local env=$HOME/.venv/$2
                if [[ $(which python) = $env/bin/python ]]
                then
                    deactivate
                fi
                if [ -f $env/bin/python ]
                then
                    rm -rf $HOME/.venv/$2
                else
                    echo "environment not found: $2"
                fi
            fi
            ;;
        *)
            if [ -z $1 ]
            then
                venv_help
            else
                local env=$HOME/.venv/$1
                if [ -d $env ]
                then
                    if ! [[ $(which python) = $env/bin/python ]]
                    then
                        source $env/bin/activate
                    fi
                else
                    python3 -m venv $env
                    source $env/bin/activate
                fi
            fi
            ;;
    esac
}