def __init__(self, pole=None):
        self.zac = None
        self.kon = None
        if pole is not None:
            if type(pole) == Zoznam:
                self.kon.next = pole
            else:
                for i in pole:
                    if type(i) == list or type(i)==tuple:
                        self.append(Zoznam(i))
                    else:
                        self.append(i)