from dataclasses import dataclass
# Or using attrs
# from attr import dataclass
from typing import List
import desert
@dataclass
class Person:
    name: str
    age: int
@dataclass
class Car:
    passengers: List[Person]
# Load some simple data types.
data = {'passengers': [{'name': 'Alice', 'age': 21}, {'name': 'Bob', 'age': 22}]}
# Create a schema for the Car class.
schema = desert.schema(Car)
# Load the data.
car = schema.load(data)
assert car == Car(passengers=[Person(name='Alice', age=21), Person(name='Bob', age=22)])