Bash function for creating virtual environments that are automatically (de)activated upon cd entry(exit).

venv.sh

venv () {
    RED='\033[0;31m'
    NC='\033[0m' # No Color
    # create virtualenv
    if [ ! -d .venv ] # if venv does not exist already
    then
        python -m venv .venv --system-site-packages
    else
        echo -e "${RED}.venv${NC} already exists!"
        return 0
    fi
    # Tell direnv to activate it when entered
    if [ ! -f .envrc ] # if file does not exist already
    then
        echo "source .venv/bin/activate" >> .envrc
    else
        echo -e "${RED}.envrc${NC} already exists. Manually place `source .venv/bin/activate` in the file"
    fi
    direnv allow

    # create vscode directory, fail if already exists
    if [ ! -f .vscode/settings.json ] # if file does not exist already
    then
        mkdir -p .vscode
        echo '{
        "python.terminal.activateEnvInCurrentTerminal": true,
        "python.defaultInterpreterPath": ".venv/bin/python"
    }
    '  >> .vscode/settings.json
    else
        echo -e "${RED}.vscode/settings.json${NC} already exists. Please manually place the following in it:
        'python.terminal.activateEnvInCurrentTerminal': true,
        'python.defaultInterpreterPath": ".venv/bin/python'
    "
    fi
}