Question: how to define schema for recursive structure?

Hello,

I’ve a question about the definition of a schema for a recursive structure. Say for example I want to encode a person which has a firstname, a lastname, and a list of children which are person too. How can I do that?

Basically, I would like to do:

person = {'firstname': str, 'lastname': str, Optional('children'): [person]}

Obviously, this does not work. Is there a solution?

Currently, I do something like:

person = {'firstname': str, 'lastname': str}
person[Optional('children')] = [person]

… but I find it not really readable…

[AlexandreDecan]

Create and store the inner dict separately, following this idea:

person = dict()
person.update({'name': str, 'gender': str, 'children': [person])

[RagingRoosevelt]

Ah, ok, that makes sense.

For anyone finding this in the future:

>>>from schema import Schema
>>>person = dict()
>>>Person = Schema(person)
>>>person.update({'name': str, 'children': [Person]})

>>>print(Person)
Schema({'name': <class 'str'>, 'children': [Schema({...})]})

>>>print(Person.schema.get('children'))
[Schema({'name': <class 'str'>, 'children': [Schema({...})]})]