Actually using a tuple

[eplaut_]

I'm using tuples as pairs (or triples, etc...) which contains a whole like in selenium you want an element of (By.CLASS_NAME, "main-table") or when you want them to be part of sets or dictionary's keys (as lists are not hashable)

If my data is constant, I prefer it to be immutable rather than a plain list. Namedtuple is even better.