zxcv is a library with an BaseApplication class, BaseG class, and some helpers.

Let's say you want to use Werkzeug, Jinja2 and SQLAlchemy for your new web site.
And you start with some Application class, then write routing code and your code
quickly turns into mess because you're just trying to make stupid things do what
you need. And here comes zxcv, not-a-web-framework, that helps you organize your
code.