new_contents: import hashlib
  import pprint
  import sys
  
  from flask.sessions import TaggedJSONSerializer
  from itsdangerous import URLSafeTimedSerializer
  
  
  def decode_flask_cookie(secret_key, cookie_str):
      salt = 'cookie-session'
      serializer = TaggedJSONSerializer()
      signer_kwargs = {
          'key_derivation': 'hmac',
          'digest_method': hashlib.sha1
      }
      s = URLSafeTimedSerializer(secret_key, salt = salt, serializer = serializer, signer_kwargs = signer_kwargs)
      return s.loads(cookie_str)
  
  
  print()
  with open(sys.argv[1]) as f:
      secret_key = f.read()
  cookie_str = input('Paste Cookie String:\n\n')
  
  print()
  pp = pprint.PrettyPrinter()
  pp.pprint(decode_flask_cookie(secret_key, cookie_str))
  
subject: add scripts