Check for redirects with different referers

check.py

import os,sys
import requests
import hashlib

url = input("URL: ")
refs = open("refs.txt",encoding="UTF-8").read().split("\n") # safe to refs.txt
for ref in refs:
  try:
    r = requests.get(url,headers={"Referer":ref})
    print("Referer {}: {} --> {} ({})".format(ref,url,r.url,hashlib.md5(r.content).hexdigest()))
  except:
    pass