python - Parse JSON find value and append random number? -

i have json file login , integer valuer (some result), this:

[         {            "name":"tamara",            "results":"434.545.234.664"         },         {            "name":"ted",            "results":"434.545.234.664"         } ] 

i need receive user login (name), find inserted name in json. if exists, add number "results".

for example: if input "ted", number appended ted's results this: "results":"434.545.234.664+4343}"

if name doesn't exist, add new record with:

{     "name":"new_name",     "results":"some_number" } 

in it.

my code, didn't work:

with open('/users/users_db.json') jsonfile:     user_name = ''     while user_name == '':         data = json.load(jsonfile)         user_name = input('your name: ')         user in data:             if user_name in user['name']:                 print('old user')                 break             else:                 print('new user') 

here's 1 of zillion possible ways code problem:

import json import random import names  random.seed(1)  data = [     {         "name": "tamara",         "results": "434.545.234.664"     },     {         "name": "ted",         "results": "434.545.234.664"     } ]   def foo(lst, name):     some_number = random.randint(0, 4343)     values = filter(lambda d: d["name"] == name, lst)      if values:         v in values:             v["results"] += "+{0}".format(some_number)     else:         lst.append({             "name": name,             "results": some_number         })  name in ["tamara", "ted"] + [names.get_first_name() in range(8)]:     foo(data, name)  print(data) 

this 1 use names module generate random test names.

one advice though, take time read page, sections named "what topics can ask here?" , "what types of questions should avoid asking?". , more importantly, please read the stack overflow question checklist. might want learn minimal, complete, , verifiable examples