from dill import dumps, loads
from dataclasses import dataclass, asdict


@dataclass
class A:
    x: int
    y: str


@dataclass
class B:
    a: A


if __name__ == "__main__":
    a = A(1, "test")
    before = B(a)
    save = dumps(before)
    after = loads(save)
    # assert before == after  # Fails
    assert asdict(before) == asdict(after)  # Fails