class A:
    i = 0

    def __init__(self):
        self.i = self.__class__.i
        self.__class__.i += 1
        print("init ", self)

    def __del__(self):
        self.__class__.i -= 1
        print("del ", self)

    @property
    def n(self):
        return self.__class__.i

    def __repr__(self):
        return f"<A(i={self.i}, n={self.n})>"

def main():
    a_list = [A() for _ in range(5)]

    for a in a_list:
        del a

    print("i\"m here", a_list)
    print(a_list[0])


if __name__ == "__main__":
    main()