JSON prettify in Python

Using the native json Python module, JSON data can be pretty-printed.

Pretty print JSON string in Python

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import json
data = '{"users": [{"id":1,"name":"Thomas"},{"id":2,"name":"Sally"}]}'
obj = json.loads(data)
print(json.dumps(obj, indent=2))

Output:

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{
  "users": [
    {
      "id": 1,
      "name": "Thomas"
    },
    {
      "id": 2,
      "name": "Sally"
    }
  ]
}

1. The json.loads() method creates a Python dictionary from a given json string.
2. The json.dumps() method outputs a json string from a given Python dictionary. In addition, the indent parameter defines the level of the indent in the resulting string.

Pretty print JSON file data in Python

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import json

with open("users.json", "r") as json_file:
    obj = json.load(json_file)

print(json.dumps(obj, indent=2))

Output:

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{
  "users": [
    {
      "id": 1,
      "name": "Thomas"
    },
    {
      "id": 2,
      "name": "Sally"
    }
  ]
}

1. The json.load() method creates a Python dictionary from a given file.
2. The json.dumps() method outputs a json string from a given Python dictionary. In addition, the indent parameter defines the level of the indent in the resulting string.