Protocol Typing - Part Three

protocol.py

from typing import Protocol

import requests


class Readable(Protocol):
    def read(self) -> str: ...


def write_to_file(reader: Readable, filepath: str) -> None:
    with open(filepath, "w") as f:
        f.write(reader.read())


with open(__file__, "r") as f:
    write_to_file(f, "file.out")


class Website:
    def __init__(self, url: str) -> None:
        self.url = url

    def read(self) -> str:
        response = requests.get(self.url)
        response.raise_for_status()
        return response.text


my_website = Website("https://h.pythondiscord.com")
write_to_file(my_website, "website")

https://mypy-play.net/?mypy=latest&python=3.11&gist=2dd090fb24c8eb87d696f931e6d76c95&flags=ignore-missing-imports