Intersection types [python-protocols] - Typescript to Python field guide

intersection.py

from typing import Protocol
from dataclasses import dataclass


class HasAge(Protocol):
    age: int


class HasName(Protocol):
    name: str


# intersection protocol type through multiple inheritance
class HasNameAndAge(HasName, HasAge, Protocol):
    ...


# implicitly implements the HasNameAndAge interface
@dataclass
class WithNameAndAge:
    age: int
    name: str


correct: HasNameAndAge = WithNameAndAge(name="Tim", age=23)  # it works!