Python JSON Sort

Last Updated : 01 Mar, 2024

In the world of programming, managing and manipulating data is a fundamental task. JSON (JavaScript Object Notation) is a widely used data interchange format due to its simplicity and human-readable structure. When working with JSON data in Python, sorting becomes essential for better organization and analysis. In this article, we will explore different of Python JSON sort and delve into different methods to achieve it.

Python JSON Sort

Below, are the methods of Python JSON Sort in Python:

Python JSON Sort Using `sorted()` Function

In this example, the below code begins by importing the `json` module in Python. It then initializes a sample JSON data string (`json_data`) and converts it into a Python dictionary (`data_dict`) using `json.loads`. Subsequently, the script showcases sorting the dictionary based on keys and values, and the sorted results are printed.

Python3

import json  # Sample JSON data json_data = '{&quot;c&quot;: 3, &quot;a&quot;: 1, &quot;b&quot;: 2}'  # Parse JSON into a Python dictionary data_dict = json.loads(json_data)  # Sort based on keys sorted_data_keys = json.dumps({k: data_dict[k] for k in sorted(data_dict)})  # Sort based on values sorted_data_values = json.dumps({k: v for k, v in sorted(data_dict.items(), key=lambda item: item[1])})  print(&quot;Sorted based on keys:&quot;, sorted_data_keys) print(&quot;Sorted based on values:&quot;, sorted_data_values)

Output

Sorted based on keys: {"a": 1, "b": 2, "c": 3} Sorted based on values: {"a": 1, "b": 2, "c": 3}

Python JSON Sort Using `itemgetter`() Module

In this example, below Python code utilizes the `json` module to parse a JSON array into a list of dictionaries. The script then employs `sorted` with `itemgetter('age')` to sort the list based on the 'age' key. The result is printed, showcasing the sorted list of dictionaries by age.

Python3

import json from operator import itemgetter  # Sample JSON array of dictionaries json_array = '[{&quot;name&quot;: &quot;Alice&quot;, &quot;age&quot;: 25}, {&quot;name&quot;: &quot;Bob&quot;, &quot;age&quot;: 30}, {&quot;name&quot;: &quot;Charlie&quot;, &quot;age&quot;: 22}]'  # Parse JSON into a Python list of dictionaries data_list = json.loads(json_array)  # Sort based on the 'age' key sorted_data_age = json.dumps(sorted(data_list, key=itemgetter('age')))  print(&quot;Sorted based on age:&quot;, sorted_data_age)

Output

Sorted based on age: [{"name": "Charlie", "age": 22}, {"name": "Alice", "age": 25}, {"name": "Bob", "age": 30}]

Python JSON Sort Using a Custom Sorting Function

In this example, below Python code begins by parsing a JSON array of dictionaries into a Python list using the `json` module. It then defines a custom sorting function based on the length of the 'name' key. The list of dictionaries is subsequently sorted using this custom function, and the result is printed.

Python3

import json  # Sample JSON array of dictionaries json_array = '[{&quot;name&quot;: &quot;Alice&quot;, &quot;age&quot;: 25}, {&quot;name&quot;: &quot;Bob&quot;, &quot;age&quot;: 30}, {&quot;name&quot;: &quot;Charlie&quot;, &quot;age&quot;: 22}]'  # Parse JSON into a Python list of dictionaries data_list = json.loads(json_array)  # Custom sorting function based on the length of 'name' def custom_sort(item):     return len(item['name'])  # Sort based on the custom function sorted_data_custom = json.dumps(sorted(data_list, key=custom_sort))  print(&quot;Sorted based on custom function:&quot;, sorted_data_custom)

Output

Sorted based on custom function: [{"name": "Bob", "age": 30}, {"name": "Alice", "age": 25}, {"name": "Charlie", "age": 22}]

Conclusion

In conclusion , Python JSON sort is a valuable skill for anyone working with JSON data in Python. By understanding and implementing the various sorting methods demonstrated in this article, you can efficiently organize and present your data in a way that suits your specific needs. Whether sorting based on keys, values, or custom criteria, these techniques empower you to make the most out of your JSON data.

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Python JSON Sort

Python JSON Sort

Python JSON Sort Using sorted() Function

Python JSON Sort Using itemgetter() Module

Python JSON Sort Using a Custom Sorting Function

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Python JSON Sort Using `sorted()` Function

Python JSON Sort Using `itemgetter`() Module