Patching a property of a used class

I'm trying to patch two properties from a class but the mocking is returning a MagicMock instead the expected return value (String).

Client class:

class ClientApi:    def create_path(self):        return f"client_api_{self.time_now}T{self.date_now}.json"    @property    def date_now(self):        return datetime.now().strftime("%Y-%m-%d")    @property    def time_now(self):        return datetime.now().strftime("%H:%M:%S")    

Test Class

class TestClientApi:    @pytest.fixture    def setup_class(self):        yield ClientApi()    def test_create_path(self, setup_class):        with patch("client_api.ClientApi.date_now") as mock_date_now, \                patch(client_api.ClientApi.time_now") as mock_time_now:            mock_date_now.return_value = "2023-11-28"            mock_time_now.return_value = "00:00:00"            expected_path = "client_api_2023-11-28T00:00:00.json"            assert expected_path = setup_class.create_path()

The create_path method is returning "<MagicMock name='time_now' id='1687227445600'>T<MagicMock name='date_now' id='1687227461936'>.json" and I would like to understand why.

I would like to ask as well if anyone know how can I compress the two patches in one and if it will work, for example:

def test_create_path(self, setup_class):    with patch("client_api.ClientApi") as mock_client_api:        mock_client_api.return_value.date_now.return_value = "2023-11-28"        mock_client_api.return_value.time_now.return_value = "00:00:00"

Or any similar way, but it's not mocking it and just sending the current timestamp.

Thank you in advance