Can I write all "append" code in a row using "if"?

how can I in python append by condition, can i write like this?

'Segment 2': result['trips'][0]['segments'][2]['bookingClass']) if(len(result['trips'][0]['segments'] == 2,

at the moment i try to write all in one row, is this possible?

response.append({'Fare Type': result['fareType'], 'Segment 2': result['trips'][0]['segments'][2]['bookingClass']) if(len(result['trips'][0]['segments'] == 2})