通过知道 class 名称，如何获取具有默认值的 class 密钥 | PYTHON

Question

I have multiple class in one file(a.py). On other file (b.py) i know some class name. In same file b.py i need the complete key, value of the class.

a.py file:

class CarCompany(BaseModel):
    audi: Optional[str] = 'Good'
    bmw: Optional[str] = 'Good'
    tata: Optional[str] = 'Good'`

class CarYear(BaseModel):
    2017: Optional[str] = 'Good'
    2018: Optional[str] = 'top sell'
    2020: Optional[str] = 'Average'`
    2021: Optional[str] = 'top sell'`

b.py file:

Some python code gives that get _____ class and send default value.

I know class name by below...

final_class.__class__.__name__

Now how to get the class variable and its default value.

Below one have some format like:

final_var.__class__.__dict__

'__fields__': {
        '2017': ModelField(name = '2017', type = Optional[str], required = False,
            default = Good),
        '2018': ModelField(name = '2018', type = Optional[str], required = False,
            default = top sell),
        '2020': ModelField(name = '2020', type = Optional[str], required = False,
            default = Average),
        '2022': ModelField(name = '2022', type = Optional[str], required = False,
            default = top sell)
}

Can anyone help me to get the requested format.

Thanks

I tried above format and code in python

Answer 1

I got the solution by

var_dict = final_var.__class__.__dict__
all_fields = var_dict['__fields__']

default_val = next((v.__getattribute__('default') for i, v in all_fields.items()), None)