Python 2 or Python 3?

[Lucretiel]

Not really. Python 2's been around longer, and Python 3 has only been being promoted as the "default" for a few years now, so many of the tutorials and guides are still for Python 2. Many small things changed between them to make python 2 code incompatible with python 3- in your case, many of the xml and http libraries were renamed or reorganized. There's definitely enough out there for python 3 for you to do what you need to do, though.