---

with open("quotes.txt", "r", encoding="utf-8") as file:
    print(file.read())

with open("quotes.txt", "a", encoding="utf-8") as file:
    while True:
        answer = input("Хотите добавить ещё одну цитату? (да/нет)")

        if answer.lower() == "нет":
            break

        quote = input("Введите цитату: ")
        author = input("Введите автора: ")

        file.write(quote + "\n")
        file.write("(" + author + ")\n\n")

with open("quotes.txt", "r", encoding="utf-8") as file:
    content = file.readlines()

print("Список авторов:")
for line in content:
    if line.strip().startswith("(") and line.strip().endswith(")"):
        print(line.strip())