9 Python
It is important to note that, as of writing, TouchDesigner 088 uses Python 3.3.1. Python 3 differs from Python 2.7 in a number of ways, but most issues can be resolved with a quick Google search. Most questions have probably already been asked, and the solution could be as simple as a set of parentheses.
This is in contrast to how the Print function is used in Python 3, where the parentheses are required:
There will be quite a bit of Python scripting in later examples, and although it is not mandatory to do so, it is highly recommended that some time be spent learning Python through introductory tutorials. There are many fantastic resources for learning Python, some of them gamified, and most of them often quite easy to pick up and put down. Often times, 10-15 minutes a day of tutorials, over the course of a few weeks, can provide a strong fundamental knowledge of Python, and more than enough knowledge to do quite a bit of scripting in TouchDesigner.