from pydantic import BaseModel, validator


def normalize(name: str) -> str:
    return ' '.join((word.capitalize()) for word in name.split(' '))


class Producer(BaseModel):
    name: str

    # validators
    _normalize_name = validator('name', allow_reuse=True)(normalize)


class Consumer(BaseModel):
    name: str

    # validators
    _normalize_name = validator('name', allow_reuse=True)(normalize)


jane_doe = Producer(name='JaNe DOE')
john_doe = Consumer(name='joHN dOe')
assert jane_doe.name == 'Jane Doe'
assert john_doe.name == 'John Doe'