Ways to sort list of dictionaries using values in python
In this article, you will learn how to sort the list of dictionaries using values in Python. We will use inbuilt method calls sorted to sort the dictionary.
Steps To Sort Dictionaries
We will follow the steps mentioned below to sort a dictionary using values.
- Pass the list containing dictionaries and keys to the sorted method.
- We can pass the keys in two different ways
- 1.Using lambda function
- 2.Using itemgetter method
Let's see the examples.
1. Using a lambda function
Example
Live Demo
## list of dictionaries
dicts = [
{"name" : "John", "salary" : 10000},
{"name" : "Emma", "salary" : 30000},
{"name" : "Harry", "salary" : 15000},
{"name" : "Aslan", "salary" : 10000}
]
## sorting the above list using 'lambda' function
## we can reverse the order by passing 'reverse' as 'True' to 'sorted' method
print(sorted(dicts, key = lambda item: item['salary']))If you run the above program, we will get the following results.
[{'name': 'John', 'salary': 10000}, {'name': 'Aslan', 'salary': 10000}, {'name': 'Harry', 'salary': 15000}, {'name': 'Emma', 'salary': 30000}]2. Using itemgetter Method
The processing of sorting list of dictionaries using the itemgetter is similar to the above process. We pass the value to the key using itemgetter method, that's the only difference. Let's see.
Example
Live Demo
## importing itemgetter from the operator
from operator import itemgetter
## list of dictionaries
dicts = [
{"name" : "John", "salary" : 10000},
{"name" : "Emma", "salary" : 30000},
{"name" : "Harry", "salary" : 15000},
{"name" : "Aslan", "salary" : 10000}
]
## sorting the above list using 'lambda' function
## we can reverse the order by passing 'reverse' as 'True' to 'sorted' method
print(sorted(dicts, key = itemgetter('salary')))Output
If you run the above program, we will get the following results.
[{'name': 'John', 'salary': 10000}, {'name': 'Aslan', 'salary': 10000}, {'name': 'Harry', 'salary': 15000}, {'name': 'Emma', 'salary': 30000}]
Published on 04-Jul-2019 12:08:58
