json

What it is good for?

Convert Python dictionaries to JSON and back.

The JavaScript Object Notation (JSON) is frequently used to send structured data around the web or store it painlessly in files. The json modules utilizes the similarity of the JSON format to Python dictionaries.

Installed with Python by default

yes

Example

Convert a dictionary to a JSON-formatted string:

  1. import json
  3. data = {'first': 1, 'second': 'two', 'third': [3,4,5]}
  4. jj = json.dumps(data)
  5. print(jj)
  6. '{"second": "two", "first": 1, "third": [3, 4, 5]}'

Convert JSON string back to a Python dictionary:

  1. d = json.loads(jj)
  2. print(d)
  4. {'second': 'two', 'first': 1, 'third': [3, 4, 5]}

Where to learn more?

https://docs.python.org/3/library/json.html