Filter dictionaries with specific keys (using list comprehension), Python

Language: Layout:

#python 2.7.12

def get_last_dict_with_specific_id(test_dict, id):
    # Create tasks list from test_dict
    tasks = test_dict["tasks"]
    
    # filter tasks list based on dictionaries id i.e get a list of dictionaries with only specific id
    # Update the same list tasks with different content (save space)
    # tasks = filter(lambda d: d["id"] == id, tasks)
    tasks = [d for d in tasks if d["id"] == id]
    
    # Pick the last dictionary and return it
    if tasks:
        return tasks[len(tasks) - 1]
    else:
        return {}

test_dict = {'user': 'xxx','tasks': [{'id':'01','age':'60'},{'id':'02','age':'50'},{'id':'01','age':'65'},{'id':'02','age':'65'}]};

last_dict_01 = get_last_dict_with_specific_id(test_dict, '01');
print last_dict_01;  # {'age': '65', 'id': '01'}

last_dict_02 = get_last_dict_with_specific_id(test_dict, '02');
print last_dict_02;  # {'age': '65', 'id': '02'}

last_dict_03 = get_last_dict_with_specific_id(test_dict, '03');
print last_dict_03;  # {}

[ + ] Show input
Absolute running time: 0.12 sec, cpu time: 0.08 sec, memory peak: 4 Mb, absolute service time: 0,13 sec