code: def set_cookie(response, name, value, expiry_seconds=None, secure=False):
      
      if expiry_seconds is None:
          expiry_seconds = 90 * 24 * 60 * 60  # Default to 90 days.
      expires = datetime.strftime(datetime.utcnow() +
                                  timedelta(seconds=expiry_seconds),
                                  "%a, %d-%b-%Y %H:%M:%S GMT")
      # Django doesn't seem to support unicode cookie keys correctly on
      # Python 2. Work around by encoding it. See
      # https://code.djangoproject.com/ticket/19802
      try:
          response.set_cookie(name, value, expires=expires, secure=secure)
      except (KeyError, TypeError):
          response.set_cookie(name.encode('utf-8'), value, expires=expires,
                              secure=secure)
docs: Set cookie wrapper that allows number of seconds to be given as the
      expiry time, and ensures values are correctly encoded.