Adding values to JSON file in python

Question

I currently have a son file created called "newsuser.json". I am trying to get a users name to be saved to the son file each time a new user is added. I can currently get a user to be saved, but when another user is added the previous user is overwritten, resulting in only having one user stored.

I am trying to get me JSON file to look like this:

{  
   "users":[  
      {  
         "name":"test1"
      },
      {  
         "name":"test2"
      }
   ]
}

Instead my output looks like:

{"name": "test1"}

Here is my code for creating a JSON object and saving to "newsuser.json"

import json

  userName = form.getvalue('userName')
    newDict = {"name": "test1"}

    with open("cgi-bin/newsuser.json") as f:
        data = json.load(f)

    data.update(newDict)

    with open("cgi-bin/newsuser.json", "w") as f:
        json.dump(data, f)

Does anyone have ideas how I can get a JSON file to print my objects under "user" and not overwrite each entry?

Answer 1

just replace 'w' with 'a' like below

with open("cgi-bin/newsuser.json", "a") as f:
    json.dump(data, f)