Adding an item to a json object using python

Question

I have a simple json file containing user levels and experience, in this format:

{
    "users" : {
        "1" : [0, 1],
        "2" : [10, 2],
    }
}

The users object uses the user id as keys for the [xp, level] array values. I need to be able to write a new user to the file, such that later I can call it as data["users"][id].

Here's my code so far, but it doesn't actually write to the file.

import json

def create_user(id):
    with open("test.json") as file:
        data = json.load(file)
        temp = data["users"]  # get the users object.
        temp[str(id)] = [0, 0]
        # [0, 0] would be the default, until the user
        # gains levels and xp.

    print('user added to file.')

What can I do to make it add the user to the users object and save to the file? Thanks.

Kuldeep Singh Sidhu · Accepted Answer · 2020-06-10 04:01:01Z

2

something = {
    "users" : {
        "1" : [0, 1],
        "2" : [10, 2],
    }
}
something["users"]["3"] = [-1,-2]
print(something)

{'users': {'1': [0, 1], '2': [10, 2], '3': [-1, -2]}}

if you want to keep it as json

something = json.dumps(something)
something = json.loads(something)

to dump everything to a file

with open(my_file_loaction, 'w') as json_file:
    json.dump(something, json_file)

edited Jun 10, 2020 at 4:01

answered Jun 10, 2020 at 3:49

Kuldeep Singh Sidhu

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