Command to activate / create Python virtual environmment

.zshrc

function venv {
    default_envdir=".env"
    envdir=${1:-$default_envdir}

    if [ ! -d $envdir ]; then
        python -m venv $envdir
        pip install ipython black flake8
        echo -e "\x1b[38;5;2m✔ Created virtualenv $envdir\x1b[0m"
    fi
    source $envdir/bin/activate
    export PYTHONPATH=`pwd`
    echo -e "\x1b[38;5;2m✔ Activated virtualenv $envdir\x1b[0m"
    python --version
}

Here's a fish port of the same script:

function venv
    set envdir $argv[1]

    if not test -d $envdir
        command python3 -m venv $envdir
        command pip3 install numpy pandas seaborn
        echo -e "\x1b[38;5;2m✔ Created virtualenv $envdir\x1b[0m"
    end
    source $envdir/bin/activate.fish
    set PYTHONPATH "pwd"
    echo -e "\x1b[38;5;2m✔ Activated virtualenv $envdir\x1b[0m"
    command python --version
end