Python3

Work in progress.

Thinks, that have automated tests works.

The template is broken, don't know why.

**UPDATE:** the template works, there was a problem in my browser-cache
Can you please indent the lines 11 to 15 and use [textwrap.dedent()](https://docs.python.org/3/library/textwrap.html#textwrap.dedent) or something like this?