from typing import Union, Set, List, Tuple, Any


Vectors = Union[Tuple, List, Set]

# create this function
def lookthelast(items: Vectors) -> Tuple[Any, bool]:
    lenght_items = len(items)
    
    for index, value in enumerate(items):
        if index == (lenght_items - 1):
            yield value, True; break
            
        yield value, False




# an example use case
numbers = ["one", "two", "three"]

for value, is_last in lookthelast(numbers):
    if is_last:
        print("this is the last element -> " + value)
        break
        
    print(value)