list_2 = [{'unique_id': '001', 'key1': 'AAA', 'key2': 'DDD', 'key3': 'EEE'},
    {'unique_id': '002', 'key1': 'AAA', 'key2': 'CCC', 'key3': 'FFF'}]
Comparing 2 lists consisting of dictionaries with unique keys in python