from steampy.client import SteamClient #импортируем библиотеку
steam_client = SteamClient('MY_API_KEY')
steam_client.login('MY_USERNAME', 'MY_PASSWORD', 'steam_guard.json')
raise RequestsJSONDecodeError(e.msg, e.doc, e.pos)
requests.exceptions.JSONDecodeError: Expecting value: line 1 column 1 (char 0)