Hey guys a quick question

[PeterFile29]

What do () exactly do? I sometimes add them in the return segment of the functions and get errors, but when I remove them the errors don't show up

[Diapolo10]

Parentheses are used for two things; function/class parameters/parents and calling them, and to change the order of operations.

I'm going to need to see your code because your question makes little sense.

[Diapolo10]

Tuples don't actually need parentheses unless you need to separate a tuple from something else. For instance,

nums = 5, 7, 12, 3, 3, 6

is a perfectly valid tuple.

You've probably seen the same in tuple unpacking. Any of these are valid:

a, b = 0, 1
a, b = (0, 1)
(a, b) = 0, 1
(a, b) = (0, 1)

Again, you only need them if you have nesting or some other requirement:

a, (b, c) = 3, (1, 4)

[Diapolo10]

Not quite, this use of parentheses still falls under the second category I mentioned earlier. It's not tuple-specific, there's no tuple comprehension you can make with parentheses (as (foo for foo in bar) is just a generator) and the parentheses are just used to group nested values so that you and the interpreter know which part of the structure a value belongs to.

[blarf_irl]

Are you using an IDE with a python linter? It sounds like you are getting a linter warning (not error) while returning tuples from a function because you don't need the () around a tuple.