Question

how do you "expect" a touple in a function?
is it just def function(tuple) ? or do i need some type of conversion there ?

Answer 1

You don't have to do anything to 'expect' a particular type of variable in python. Just define your function normally:

def myfunction(something):

And use something as though it's a tuple..

Answer 2

You just write the function so it will operate on a tuple. You can make the function insist on a tuple, but you'd normally just write your function on the assumption it'll always be passed a tuple and then only ever pass it one.