The types on the variables. Python recently adopted "gradual typing", but it isn't enforced by default. Consequently, you may have to actually execute a Python program to determine what an unlabeled variable type is.
A lot of people write Python code and then run "AI" on it to fill in the variable types. This, of course, is error prone and shitty. And the AI will miss strange usages like the one I flagged.
Although I am sorry for phrasing it as "variable typing". I can see how you might read that as "typing that varies" instead.
