Use lambda function with sorted() inbuilt function to sort the list of dictionaries in Python. Pass the list containing dictionaries and keys to the sorted method.
Example sort list of dictionaries in Python
A simple example code demonstrates the working of sorted() with lambda. We sort the list of dict by age, age+name, or name.
list1 = [{"name": "Cat", "age": 10},
{"name": "Annie", "age": 30},
{"name": "Ben", "age": 20}]
# sort by age
print(sorted(list1, key=lambda i: i['age']))
# sort by name and age
print(sorted(list1, key=lambda i: (i['age'], i['name'])))
# sort by name
print(sorted(list1, key=lambda i: i['name']))Output:
How do I sort a list of dictionaries by the value of the dictionary?
Answer: Use sorted() method, The sorted() function takes a key= parameter. Example sorted by name.
my_list = [{'name': 'Homer', 'age': 39}, {'name': 'Bart', 'age': 10}]
res = sorted(my_list, key=lambda k: k['name'])
print(res)Output: [{‘name’: ‘Bart’, ‘age’: 10}, {‘name’: ‘Homer’, ‘age’: 39}]
Alternatively, you can use operator.itemgetter instead of defining the function yourself
from operator import itemgetter
my_list = [{'name': 'Homer', 'age': 39}, {'name': 'Bart', 'age': 10}]
res = sorted(my_list, key=itemgetter('name'))
print(res)Add reverse=True to sort in descending order
res = = sorted(list, key=itemgetter('name'), reverse=True)Do comment if you have any doubts or suggestions on this Python dictionary tutorial.
Note: IDE: PyCharm 2021.3.3 (Community Edition)
Windows 10
Python 3.10.1
All Python Examples are in Python 3, so Maybe its different from python 2 or upgraded versions.