code: def load_session_from_file(self, username, sessionfile):
          
          session = requests.Session()
          session.cookies = requests.utils.cookiejar_from_dict(pickle.load(sessionfile))
          session.headers.update(self._default_http_header())
          session.headers.update({'X-CSRFToken': session.cookies.get_dict()['csrftoken']})
          self._session = session
          self.username = username
docs: Not meant to be used directly, use :meth:`Instaloader.load_session_from_file`.