@ion_killah, in general, it’s probably considered better form to omit the parentheses with return. Since return is not a function, they are not required, and the (definite, but not overwhelming) preference seems to be to omit them.
return can evaluate and return a sequence, called a tuple, of expressions.
If you have not yet studied the tuple data type, it is a data type consisting of a sequence of items separated by commas. By default, Python prints tuples surrounded by parentheses, leading people to suppose that parentheses are required, but they are not, unless it’s necessary to place them to avoid ambiguity (for instance, if the tuple contains mathematical expressions requiring parentheses.)
# cool things you can do with tuples
t = 5, 7 # tuple packing
print(t, t) # the print function can take a tuple as an argument
a, b = t # tuple unpacking
# Here is a function with multiple expressions in the return statement: a tuple
return x**2, x**3, x**4
q = sq_cube_fourth(5) # call the function
print(q) # this will be a tuple
r, s, t = q # now let's unpack it
(5, 7) # Python adds parentheses
(25, 125, 625) # again with the parentheses
There are other rules, the most important being that you can’t change the items within a tuple, as you can with lists. As with strings, if you need to change something, you must build a new tuple.