Python - change JSON values and pretty print

Question

How to change Values in JSON by using Python in any of the nodes (value1, value2, value3, value4, value5, value6, value7):

{
    "key1": "value1",
    "level2": {
        "key2": "value2",
        "key3": "value3",
        "level3": [
            {
                "key4": "value4",
                "level5": [
                    {
                        "key5": "value5",
                        "key6": "value6"
                    }
                ],
                "key7": "value7"
            }
        ]
    }
}

After changing e.g. Value6 with some other value - I would like to print that new JSON in a nice print format (same as above).

Thanks.

Deserialize the json... modify the object, reserialize the json using the `indent` parameter to `json.dump`.... — juanpa.arrivillaga, Jan 17 '18 at 19:15
You call that format "nice"? Despite all that inconsistent spacing? — Stefan Pochmann, Jan 17 '18 at 19:17
Possible duplicate of [How to update json file with python](https://stackoverflow.com/questions/13949637/how-to-update-json-file-with-python) — Xantium, Jan 17 '18 at 19:31

score 6 · Accepted Answer · answered Jan 17 '18 at 19:18

6

You'll want to first convert the string to a python dictionary, then manipulate the dictionary, and finally dump the dictionary back to a string. Here's a simple example:

import json
json_string = '{"foo": "bar"}'
json_dict = json.loads(json_string)
json_dict["foo"] = "baz"
print json.dumps(json_dict, indent=4)

answered Jan 17 '18 at 19:18

Pwnosaurus

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1

This works good and just wondering is there a way to keep order of KEYS the same as in original string? For example - sometimes I get KEY7 before KEY4 (but in correct level) when convert to dictionary and then print out with json.dumps.... – Joe Jan 17 '18 at 19:44
2

It's a bit more complicated, but check out this answer: https://stackoverflow.com/a/6921760/1739725 – Pwnosaurus Jan 17 '18 at 19:45

Python - change JSON values and pretty print

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