[英]How to overwrite Python Dataclass 'asdict' method
I have a dataclass, which looks like this:我有一个数据类,它看起来像这样:
@dataclass
class myClass:
id: str
mode: str
value: float
This results in:这导致:
dataclasses.asdict(myClass)
{"id": id, "mode": mode, "value": value}
But what I want is但我想要的是
{id:{"mode": mode, "value": value}}
I thought I could achive this by adding a to_dict
method to my dataclass, which returns the desired dict, but that didn't work.我以为我可以通过向我的数据类添加一个
to_dict
方法来实现这一点,该方法返回所需的字典,但这不起作用。
How could I get my desired result?我怎样才能得到我想要的结果?
from dataclasses import dataclass, asdict
@dataclass
class myClass:
id: str
mode: str
value: float
def my_dict(data):
return {
data[0][1]: {
field: value for field, value in data[1:]
}
}
instance = myClass("123", "read", 1.23)
data = {"123": {"mode": "read", "value": 1.23}}
assert asdict(instance, dict_factory=my_dict) == data
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