def equities_sids_for_country_code(self, country_code):
        """Return all of the sids for a given country.

        Parameters
        ----------
        country_code : str
            An ISO 3166 alpha-2 country code.

        Returns
        -------
        tuple[int]
            The sids whose exchanges are in this country.
        """
        sids = self._compute_asset_lifetimes([country_code]).sid
        return tuple(sids.tolist())