Python Docstring: Raises missing

[RedingJeff]

Most methods are missing the Raises part in the Docstring commands.

Some are informing about possible Error raises in the description, but not all.

I would suggest adding the Raises tag and detail information to all methods that could raise an error. With this it is directly clear to the user if he needs to handle errors and which types to expect.

[tstorek]

@RedingJeff mostly out should be requesrexeptions

[tstorek]

linked to #51

[github-actions]

Branch 63-Python-Docstring-Raises-missing created!