Multiple gets from JSON?

[alex36540]

Hello, I am writing a script using and Instagram API to get data from users. Here is the link for the Github page: https://github.com/LevPasha/Instagram-API-python, and here's the code I have so far. It's trying to get a list of everyone an account follows.

from InstagramAPI import InstagramAPI
import time

#Setup and login
username='example'
password='example1' 
API = InstagramAPI(username,password)
API.login()
user='alex36540' #this is the user to perform actions on

#find User ID
def get_userID(user):
    API.searchUsername(user)
    try:
        return API.LastJson["user"]["pk"]
    except Exception:
        print("Username doesn't exist")
        return False

#Get Following
following=[]
def get_Followers(user):
    next_max_id=True
    while next_max_id:
        print(next_max_id)
        if next_max_id==True:next_max_id=''
        _=API.getUserFollowings(get_userID(user),maxid=next_max_id)
        following.extend(API.LastJson.get('users',[]))
        print(following)
        next_max_id=API.LastJson.get('next_max_id','')
        time.sleep(60)
    len(following)
    unique_following={
        f['pk']:f
        for f in following
    }
    len(unique_following)
get_Followers(user)

I added the print in line 29 to show the JSON data that was getting added to the list, and this is one list item (there were hundreds of these):

[{'pk': 0000000, 'username': 'example1', 'full_name': 'John Doe', 'is_private': True, 'profile_pic_url': 'https://url.jpg', 'is_verified': False, 'has_anonymous_profile_picture': False, 'reel_auto_archive': 'unset', 'is_favorite': False}]

I was wondering how could I change line 28 so that I can pick out specific items I want to get, specifically just pk, username, and full name?

Also, I would like some help understanding what exactly the code starting from line 32 means, as it is not originally mine.