using vanilla python to parse azure rest api stuff to dataclasses

dataclasses_odata_azure.py

import dataclasses
import json


def default_dataclass_init_method(self, kwargs):
    for fi in dataclasses.fields(self):
        value = kwargs.get(fi.name, fi.default)
        if value == dataclasses.MISSING:
            if fi.default_factory == dataclasses.MISSING:
                raise ValueError('missing field ' + fi.name + ' and no default/factory')
            value = fi.default_factory()
        setattr(self, fi.name, value)


ODATA_ = '@odata.'


def default_dataclass_odata_azure_stuff(self, kwargs):
    fixed = {k[len(ODATA_):]: kwargs.pop(k) for k in list(kwargs.keys()) if k.startswith(ODATA_)}
    kwargs.update(fixed)
    default_dataclass_init_method(self, kwargs)


@dataclasses.dataclass
class Example:
    my_field: str  # = dataclasses.field(default=None)
    nextLink: str = None

    def __init__(self, **kwargs):
        default_dataclass_odata_azure_stuff(self, kwargs)

    def __post_init__(self):
        print(self)


def main():
    dc_input = '{"@odata.nextLink":"abc","my_field":null}'
    e_input = json.loads(dc_input)
    e = Example(**e_input)
    print(e)


if __name__ == '__main__':
    main()