Question

You will have two functions:

Function 1: update(user_dictionary): This function will take a dictionary entry as user that has keys, ‘username’,’password’,’uid’, and ‘gid’ along with values. You will search if the username is already in your user_list that you get from your userfile.json file that you have created in your previous task.

If the username in your user_dictionary is not in the list that is in your .json file then add the user_dictionary into the existing list and update your userfile.json with the new entry.

If the username in your user_dictionary isin the list that is in your .json file then just update the fields password,uid, and gid based on the information provided.

Function 2: delete(user_name): This function will take a username and remote entry associated with the user.

Previous Task Code:

#!/usr/bin/env python3.6
import pwd
import json

#Task 1
list=pwd.getpwall()
dictionary={}
print(list)
for i in range(len(list)):
with open('list.json','a') as f:
json.dump(list[i].pw_name,f)
json.dump(list[i].pw_passwd,f)

Answer 1

import json


def update(user_data):

    user_list = json.load(open('/home/i0504/Documents/test_json.json', 'r'))
    index = next((i for i, item in enumerate(user_list) if item["username"] == user_data.get("username", '')), None)
    update = False
    if index:
        update = True
    with open('/home/i0504/Documents/test_json.json', 'w') as _file:
        if update:
            user_list[index] = user_data
        else:
            user_list.append(user_data)
        json.dump(user_list, _file)

def delete(user_name):
    user_list = json.load(open('/home/i0504/Documents/test_json.json', 'r'))
    index = next((i for i, item in enumerate(user_list) if item["username"] == username), None)
    if index:
        user_list.pop(index)
    with open('/home/i0504/Documents/test_json.json', 'w') as _file:
        json.dump(user_list, _file)