# Tutorial

A tutorial: build one working Viewdata service from nothing, a step at a time.
You will write a calendar — the date and time, a month as a grid, the days to
come — and dial into it as a 1980s terminal would. Each step adds one capability
and leaves the service running, so the framework is met in the order a service
needs it. Allow about an hour.

By the end your file is `calendar_viewdata/application.py`, the framework's own
worked example, line for line.

```{toctree}
:maxdepth: 1

01-hello-frame
02-menus-and-numbers
03-state-and-lifespan
04-frames-and-keys
05-sequences
06-framework-pages
07-testing
```