Conveniently activate python venv by looking for a venv directory

activate.sh

// include this in your .zshrc or .bash_profile

activate () {
	check_if_dir_is_venv () {
		local dir="$1" 
    dir="$(realpath $dir)"
    if [[ -d "${dir}/bin" && -d "${dir}/lib" && -f "${dir}/bin/activate" ]]
      then
        source "${dir}/bin/activate"
        return 0
    fi
		return 1
	}

	check_dir_for_venv () {
		local search_dir="$1" 
		for dir in "$search_dir"/*/
      do
        check_if_dir_is_venv "$dir" && return 0
      done
    check_if_dir_is_venv "$search_dir" && return 0
		return 1
	}

	if check_dir_for_venv "."
	then
		return 0
	fi
	if check_dir_for_venv ".."
	then
		return 0
	fi

	echo "No virtual environment found."
	return 1
}