def base16(arg):
    # Helpers
    def s(cmd):
        return cmd.strip('\n') if type(cmd) is str else cmd

    def l(cmd):
        return cmd.split("\n")[:-1] if type(cmd) is str else cmd

    def all_themes():
        for theme in l(s($(ls -1 $BASE16_SHELL/scripts))):
            yield theme[7:-3]

    # Declaration of variables
    if not arg:
        return 'Dont select theme. Write \033[0;32mlist\033[0;0m to list the themes.'
    theme = arg[0]
    if (theme == 'list'):
        themes = [theme for theme in all_themes()]
        return '\n'.join(themes)
    script = $BASE16_SHELL + "scripts/base16-" + theme + ".sh"

    # Checking if exist theme
    if (isfile(script)):
        bash @(script)
        ln -fs @(script) ~/.base16_theme
        $BASE16_THEME = theme
        template = f"if !exists('g:colors_name') || g:colors_name != 'base16-{theme}'\n  colorscheme base16-{theme}\nendif"
        echo -e @(template) > ~/.vimrc_background
        return True
    else:
        print("Not exists theme.")
        return False
    # TODO: Terminate Hooks
    # code ...


aliases['base16'] = base16