tasks/easy/task_02/db.py

import os

DATABASE_URL = "postgres://appuser:Sup3rS3cretP4ss@db.internal:5432/app"


def connection_string() -> str:
    return os.getenv("DATABASE_URL", DATABASE_URL)


def connection_summary() -> str:
    return connection_string().split("@", maxsplit=1)[-1]