How Can I Pretty-Print JSON Files in Python?

Pretty-Printing JSON Files in Python

When analyzing or manipulating JSON data, it can often be helpful to have it formatted in a human-readable way for easier viewing.

Pretty-Printing with JSON

To pretty-print a JSON file in Python, utilize the indent parameter of the json.dump() or json.dumps() functions. Specify the desired number of spaces for indentation in the indent parameter.

For example:

import json

your_json = '["foo", {"bar": ["baz", null, 1.0, 2]}]'
parsed = json.loads(your_json)
print(json.dumps(parsed, indent=4))

Output:

[
    "foo",
    {
        "bar": [
            "baz",
            null,
            1.0,
            2
        ]
    }
]

In this example, the indent parameter is set to 4, resulting in indented JSON with 4 spaces.

Pretty-Printing JSON Files

To pretty-print a JSON file, you can make use of the json.load() function:

with open('filename.txt', 'r') as handle:
    parsed = json.load(handle)

This loads the JSON file into the parsed variable, which can then be pretty-printed using the json.dumps() function as shown above.

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