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How to loop through a json file and change specific values based on specific criterias

I am trying to make a python script in which I can change a specific value based on a specific location inside a file for this example a json file specifically.

The json file is about 100k long there are multiple areas specified with "name": "Box #14", "name": "Box #16", "name": "Box #17" and the list keeps going. For each name it comes an image field just below the name e.g. "image": ".png", I want to edit that .png value to be based on a specific value depending on the name number. For example if "name": "Box #14 then "image": "13.png" and if "name": "Box #15 then "image": "14.png" and so on...

What I got so far is:

import re
import sys

i = 0
++i

PAT = re.compile('"image": ".png"')

KEYWORDS_PATH = 'images.json'
KEYWORDS = open(KEYWORDS_PATH).read().splitlines()

names = ['"name": ".*"']


def check_all(check, ws):
    return all(re.search(r'\b{}\b'.format(w), check) for w in ws)


with open('images.json') as inp, open('output.json', 'w') as out:

    for name in names:
        if names in KEYWORDS:
            print('Removed the keyword - %s' % names)
            sys.exit()
    for line in inp:
        out.write(PAT.sub('"image": "%s.png"' % i, line))

this is making everything 0.png

Update:

this is one examples inside the json file

{
  "name": "Box #14",
  "image": ".png",
  "attributes": [
    {
      "trait_type": "Size",
      "value": "0.8 inch"
    }   
  ]
    "files": [
      {
        "url": ".png",
        "type": "image/png"
      }
    ]
  }
}

All I want to do is replace the .png inside the image field with whatever the number on the name is but a digit below e.g. as shown above Box #14 name I want the image to be replaced from .png to 13.png



source https://stackoverflow.com/questions/70792602/how-to-loop-through-a-json-file-and-change-specific-values-based-on-specific-cri
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