very basic handler definition example

# get_user_handler.py
from pydantic import Model


class BaseHandler:
    def __init__(self, request: Request):
        self.request = request
    # some other generic logic

class UserGetModel(Model):  # < request body representation
    id: int
    some_field: dict

class UserResponseModel(Model):
    id: int
    email: str
    name: str

class UserGetHandler(BaseHandler):
    method = 'GET'

    def handle(self, user_id: int, body: UserGetModel) -> UserResponseModel:
        user = User.query.get(user_id)
        return UserResponseModel(user)


def request_handler(request: Request):
    return UserGetHandler(request).handle()



# app.py
PATHS = (
    path('users/{user_id}', UserGetHandler),
    path('users', UsersListHandler),
)