what's not to like about this code?

service.py

import os
import random
from time import sleep

import httpx


class TaskRepository:

    def get_all(self):
        return []


class TaskService:

    def __init__(self):
        self._repository = TaskRepository()

    def expensive_operation(self):
        if random.randint(0, 1):
            # Sleep for 5.5 seconds
            sleep(5.0)
            return 42
        return 20000

    def all(self):
        # Returns tasks
        return httpx.get("https://jsonplaceholder.typicode.com/todos/",
                         allow_redirects=True).json()

    def get(self, id):
        host = os.getenv("MY_SERVICE_HOST", "jsonplaceholder.typicode.com")
        res = httpx.get(f"https://{host}/todos/{id}", allow_redirects=True)
        try:
            res.raise_for_status()
        except Exception:
            return "problem"
        return res.json()

    def delete(self, url):
        httpx.delete(url, headers={"Authorization": "Bearer some-token"})


def main():
    """Run the program"""
    service = TaskService()
    res = service.expensive_operation()
    # Load task from server
    tasks = service.all()
    for task in tasks:
        print(task)
    my_task = service.get(res)
    print(my_task)
    print(httpx.post("https://jsonplaceholder.typicode.com/todos",
                     json={"title": "new_task", "body": "important", "userId": 1},
                     allow_redirects=True))
    tasks = service.all()
    for task in tasks:
        if task["title"] == "new_task":
            url = "https://jsonplaceholder.typicode.com/todos/" + task["id"]
            service.delete(url)
    print("Task deleted")


if __name__ == "__main__":
    main()