pydantic version: 1.5.1
python version: 3.8.2
a.py:
from __future__ import annotations
from uuid import UUID
from pydantic.dataclasses import dataclass
@dataclass
class A:
uuid: UUID
# workaround
# def __post_init__(self):
# self.__pydantic_model__.update_forward_refs(**globals())
b.py:
from __future__ import annotations
from uuid import uuid4
from pydantic.dataclasses import dataclass
from a import A
@dataclass
class B(A):
pass
B(uuid=uuid4())
B(uuid=uuid4()) throws field "uuid" not yet prepared so type is still a ForwardRef, you might need to call B.update_forward_refs().
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