Add element to a JSON file?

Question

I am trying to add an element to a json file in python but I am not able to do it.

This is what I tried untill now (with some variation which I deleted):

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Answer 1

One possible issue I see is you set your JSON unconventionally within an array/list object. I would recommend using JSON in its most accepted form, i.e.:

test_json = { "a": 1, "b": 2}

Once you do this, adding a json element only involves the following line:

test_json["c"] = 3

This will result in:

{'a': 1, 'b': 2, 'c': 3}

Afterwards, you can add that json back into an array or a list of that is desired.

Answer 2

alternatively you can do

iter(data).next()['f'] = var

Answer 3

You can do this.

data[0]['f'] = var