class Bar:
    def __init__(self):
        self.x = randint(1, 1000)
        self.y = [randint(1, 1000) for _ in range(100)]

class Foo:
    def __init__(self):
        self.big_list = [Bar() for _ in range(10**4)]

    def print_size(self):
        t = time.time()
        print("pympler asizeof", asizeof.asizeof(self), (time.time() - t))
        t = time.time()
        print("original total_size", total_size2(self), (time.time() - t))
        t = time.time()
        print("vlorentz total_size", total_size(self), (time.time() - t))




pympler asizeof 34706824 1.6227340698242188
original total_size 48 2.09808349609375e-05
vlorentz total_size 30659341 12.164994716644287