Summary of unsolvable problems.

[hhaoao]

• Special symbols can't be solved without rules to convert.
  https://stackoverflow.com/questions/6578986/how-to-convert-json-data-into-a-python-object

import json
from types import SimpleNamespace

data = '{"$123": "456", "name": "John Smith", "hometown": {"name": "New York", "id": 123}}'

# Parse JSON into an object with attributes corresponding to dict keys.
x = json.loads(data, object_hook=lambda d: SimpleNamespace(**d))
print(x.name, x.hometown.name, x.hometown.id)
print(x.$123)        # Errors can occur here
print(getattr(x.asdf[0], "$sdf"))        #  get variables.

• Maybe it's easier this way, Access via JSONPath.
  https://pypi.org/project/jsonpath-python/#examples

from jsonpath import JSONPath

data = { "$aa": [{"$bb": "123"}] }        # dict
field_data = "$.'$aa'[0].'$bb'"
a  = JSONPath(field_data).parse(data)
print(a)       # ['123']