我试图创建一个具有嵌套属性的python数据类的示例，当我传递一个属于某个嵌套属性的属性时，它应该用提供的值替换实际值。这里我尝试：

from dataclasses import dataclass, field
from typing import Optional

@dataclass(kw_only=True)
class Attributes:
    correlation_id: Optional[str] = None
    routing_key: Optional[str] = None

@dataclass(kw_only=True)
class Metadata:
    workflow: Optional[str] = None
    workflow_state_id: Optional[str] = None
    attributes: Optional[Attributes] = field(default=None)

    def __post_init__(self):
        if self.attributes is None:
            self.attributes = Attributes()

@dataclass(kw_only=True)
class Message:
    version: Optional[int] = field(default=0)
    metadata: Optional[Metadata] = field(default=None)

    def __post_init__(self):
        if self.metadata is None:
            self.metadata = Metadata()

@dataclass(kw_only=True)
class Command(Message):
    ...

@dataclass(kw_only=True)
class SomeCommand(Command):
    name: str
    description: str

c1 = SomeCommand(name="awesome command", description="desc", routing_key='some key')
print(c1)

我的预期React应该是：

SomeCommand(version=0, metadata=Metadata(workflow=None, workflow_state_id=None, attributes=Atributes(correlation_id=None, routing_key='some key')), name='awesome command', description='desc')

但它不工作，并显示错误：

TypeError: SomeCommand.__init__() got an unexpected keyword argument 'routing_key'

在Python数据类中可以做什么？如果是，我应该改变什么？先谢谢你了。