More advanced levels with stunning examples #102

It would be nice to have a continuation of the learning levels. This could be:

• More (and more fascinating) examples of things to draw using (and thus practicing) the techniques learned in levels 1-4
• More general programming techniques and paradigms (data types, classes, decorators, etc.)
• Fun and useful tricks you can do (only) with Python (e.g. rename and reuse a function, monkey patching)
• GUI programming with Tk and wxPython

Sources of Inspiration (to be expanded)

• The LibreLogo blog -- shows some fascinating drawings
• Examples on Using Python -- e.g. animated text banners in the console