def split(txt: str) -> tuple:
    space_index = 0
    while txt[space_index] != ' ':
        space_index += 1
    part1 = txt[:space_index]
    part2 = txt[space_index+1:]
    return part1, part2

def main_4ex():
    txt1 = "Hello World"
    part1, part2 = split(txt1)
    print(f'For input {txt1} we get {part1} and {part2}')

    txt2 = "Leo Messi"
    part1, part2 = split(txt2)
    print(f'For input {txt2} we get {part1} and {part2}')

main_4ex()