abcboom.py

from abc import ABC
from collections.abc import Set, Iterable
from itertools import count

class Base(Iterable, ABC):
    def __iter__(self):
        yield from []

def mk(klass):
    return type('x', (klass,), {})()

x = mk(Base)

for i in range(500):
    x = mk(type(x))

print(isinstance(10, Iterable))