Pydantic: dynamic field name and structure

Question

I am currently implementing operations over Intercom data model using Pydantic.

Lots of Intercom models implements list of objects as below:

"contacts":{
    "type": "contact.list"
    "contacts": [
        Contact1,
        Contact2,
        …
    ]
}

And we have same logic for some other objects lists.

How can I define a dynamic and generic Pydantic base class to manage it?

I firstly think to:

class BaseList(BaseModel):
    type: str
    ???

    @validator('type')
    def check_type(cls, v):
        assert v.endswith(".list")
        return v

And then usage as below in my parent model:

class ParentModel(BaseModel):
    contacts: BaseList[Contact]

But I don't know how to manage the dynamic field name and it's nested associated key.

Thank you for your help !

Regards

Answer 1

import typing

class Contact(object):    pass


class BaseModel(object): pass


class ContactList(BaseModel):
    type: str
    contacts: typing.List[Contact]

Not sure if it is what you are looking for? typing.List[SomeType]