How to remove an array from a json object with python?

Question

This is the content of my json file:

{
  "tabID": [
    {
      "dat": [1, "q"],
      "opt": []
    }
  ]
}

I'm building a python app that process that json file and I need to remove "opt":[].

I've tried next code:

data['tabID'][0].remove('data')

But it doesn't work.

Could you give me any advice? Thanks.

For things this simple, post running code so we can just copy/paste for experimenting. Your json has a bug and we have to write the surrounding code to test an answer. — tdelaney
– tdelaney, Commented Jun 1, 2020 at 21:30

Olvin Roght · Accepted Answer · 2020-06-01 21:36:16Z

2

Make it a dict and pop the key.

Fixed an error in your JSON. Working example is at https://repl.it/repls/FrighteningPungentEquipment or as actual code:

import json

the_json_string = '{"tabID":[{"dat":[1, "q"],"opt":[] }]}'

obj = json.loads(the_json_string)
obj['tabID'][0].pop('opt')

print(json.dumps(obj))

edited Jun 1, 2020 at 21:36

Olvin Roght

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answered Jun 1, 2020 at 21:21

iScripters

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3 Comments

tdelaney Over a year ago

The json string could be in triple quotes for readability `"""{"tabID":[{"dat":[1, "q"],"opt":[] }]}""". And just delete your first attempt since it doesn't really help people in the future.

Olvin Roght Over a year ago

@tdelaney, raw prefix or single quotes could be even better.

tdelaney Over a year ago

@OlvinRoght - Potentially, yes. I was thinking in terms of keeping the line breaks in the original example. Raw strings are great if you want embedded "\n" in the json too.

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