Hi,
Right, if you're looking for abstraction use a class,
if you just *want it to work*, use arrays.
suggestion:
If you use a class, try to define operations on it,
such as __mul__ and __add__, so that you effectively
*do not have* to access self[0] and self[1] anymore
AFAIC, I would keep the array and no constants
for as long as my 'Velocity' objects do not require
member methods.
Using a class is an interesting idea, which I may look into further.
Right now, however, my code involves a number of for-loops and list
comprehensions which can act on any set of components (which is the only
reason I'm using a list) and I'm not sure how I could replace them
without introducing a lot of duplicate code.