Python read JSON file and modify

Question

Hi I am trying to take the data from a json file and insert and id then perform POST REST. my file data.json has:

{     'name':'myname' } 

and I would like to add an id so that the json data looks like:

 {      'id': 134,      'name': 'myname'  } 

So I tried:

import json f = open("data.json","r") data = f.read() jsonObj = json.loads(data) 

I can't get to load the json format file. What should I do so that I can convert the json file into json object and add another id value.

Answer 1

Set item using data['id'] = ....

import json  with open('data.json', 'r+') as f:     data = json.load(f)     data['id'] = 134 # <--- add `id` value.     f.seek(0)        # <--- should reset file position to the beginning.     json.dump(data, f, indent=4)     f.truncate()     # remove remaining part