A simple code to get two or more Instagram user's common followers or following

InstaCommon.py

import instaloader
from instaloader import Profile

#to get followings of that username
def getfollowing(ids,lists):
	profile = Profile.from_username(L.context, ids)
	for followee in profile.get_followees(): #change to 'get_followers()' to get the persons followers
		lists.append(followee)

def data(names):
	datas = [[] for _ in range(len(names))]
	string =[]
	for index, name in enumerate(names):
		getfollowing(name,datas[index])
		string.append('datas['+str(index)+']')
	operation = ')&set('.join(string)
	operation = 'print(set('+operation+'))'
	exec(operation)

L = instaloader.Instaloader()
L.login(user="YOUR_USERNAME",passwd="YOUR_PASSWORD")

names = ["FIRST_ID","SECOND_ID","OPTIONAL_ID"] #put more that one username in this list. You can add more if you want a refined search
data(names)