return list dictionary of the two biggest numbers in a list of dictionaries

def two_biggest_num(list_of_dictionaries):
 
    final_list = []
    for item in list_of_dictionaries:
        final_list.append(item['num'])
    sorted_list = sorted(final_list, reverse=True)
    top_two_numbers = sorted_list[:2]
    return [item for item in list_of_dictionaries if item['num'] in top_two_numbers]
    
list_of_dictionaries = [{'num':1}, {'num':2}, {'num':3}, {'num':4}, {'num':5}]

two_biggest_num(list_of_dictionaries)

# output
[{'num': 5}, {'num': 4}]