get followers

gf.py

import urllib.request
from bs4 import BeautifulSoup as bs4
import re
from InstagramAPI import InstagramAPI
import sys

p = urllib.request.urlopen(urllib.request.Request('https://www.instagram.com/%s/' % sys.argv[4]))

bs = bs4(p, 'html.parser')

data = bs.findAll("script")[3]

pattern = re.search(r'\"id":"(\d+)"', data.text)

uid = pattern.group()[6:-1]
api = InstagramAPI(sys.argv[1], sys.argv[2])
api.login()
followers = api.getTotalFollowers(uid)
with open(sys.argv[3], 'w') as f:
	for i in followers:
		f.write(i['username']+'\n')