class Test:
    one: int
    two: int
    name: str

class Scheme:
    name: str
    money: int
    male: bool
    prop: Test

scheme = mixer.blend(Scheme, prop__one=1)

from typing import TypedDict

class Test(TypedDict):
    one: int
    two: int
    name: str

scheme = mixer.blend(Test, name='John') ##{"one": 5, "two": 7, "name": "John"}