def choose_from_list(items, label_fn):
    for i, item in enumerate(items, start=1):
        print(f"{i}. {label_fn(item)}")
    print("0. Back")

    choice = input("> ").strip()
    if choice == "0":
        return None

    try:
        return items[int(choice) - 1]
    except (ValueError, IndexError):
        print("Invalid choice")
        return None