[Python] Validating nested dict with Pydantic `create_model`

I am using create_model to validate a config file which runs into many nested dicts. In the below example I can validate everything except the last nest of sunrise and sunset.

class System(BaseModel):

data: Optional[create_model('Data', type=(str, ...), daytime=(dict, ...))] = None

try:
p = System.parse_obj({
'data': {
'type': 'solar',
'daytime': {
'sunrise': 5,
'sunset': 10
}
}})

print(p.dict())
vals = p.dict()
print(vals['data']['daytime'], type(vals['data']['daytime']['sunrise']))

except ValidationError as e:
print(e)


How can I incorporate a nested dict in create_model and ensure sunrise and sunset are validated? Is there any other way to validate this?

Thanks for your feedback.

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