VK friends mutual

#!/usr/bin/env python3
#-*- coding: UTF-8 -*-

import os, vk_api, sys
from time import sleep

def captchaHandler(captcha):
    key = input("Enter Captcha {0}: ".format(captcha.get_url())).strip()
    return captcha.try_again(key)
def getUserId(link):
    id = link
    if 'vk.com/' in link:
        id = link.split('/')[-1]
    if not id.replace('id', '').isdigit():
        id = vk.utils.resolveScreenName(screen_name=id)['object_id']
    else:
        id = id.replace('id', '')
    return int(id)

sl = lambda: sleep(0.35)

vk_session = vk_api.VkApi(token=os.environ["OLEG_VK_TOKEN"], captcha_handler=captchaHandler)
try:
    vk_session.authorization()
except vk_api.AuthorizationError as error_msg:
    print(error_msg)
vk = vk_session.get_api()

peoples = list(map(getUserId, sys.argv[1:]))
fr = set(vk.friends.get(user_id=peoples[0])['items'])
sl()
for p in peoples[1:]:
    fr = fr & set(vk.friends.get(user_id=p)['items'])
    sl()

for mb in fr:
    print("http://vk.com/id{}".format(mb))