magic_methods:add

class House:
    def __init__(self, name: str, symbol: str, student_list: list):
        self.name = name
        self.symbol = symbol
        self.student_list = student_list
        self.current_student_id = -1

    def __len__(self):
        return len(self.student_list)

    def __next__(self):
        self.current_student_id += 1
        try:
            return self.student_list[self.current_student_id]
        except IndexError:
            raise StopIteration()

    def __iter__(self):
        self.current_student_id = 0
        return self

    def __getitem__(self, item):
        return self.student_list[item]

    def __add__(self, other):
        return self.student_list + other.student_list