How to print pretty json in python

Json is the data set which contain key and value pair.

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

print (json_string)

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

print (json.dumps(chain, indent=4, sort_keys=True))

output: [

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

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