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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def has_role(self, identifiers, required_role_s):
 """ Confirms whether a subject is a member of one or more roles. If the authorization info cannot be obtained from the accountstore, role check tuple yields False. :type identifiers: subject_abcs.IdentifierCollection :param required_role_s: a collection of 1..N Role identifiers :type required_role_s: Set of String(s) :yields: tuple(role, Boolean) """

        identifier = identifiers.primary_identifier

        # assigned_role_s is a set
        assigned_role_s = self.get_authzd_roles(identifier)

        if not assigned_role_s:
            msg = 'has_role:  no roles obtained from account_store for [{0}]'.\
                format(identifier)
            logger.warning(msg)
            for role in required_role_s:
                yield (role, False)
        else:
            for role in required_role_s:
                hasrole = ({role} <= assigned_role_s)
                yield (role, hasrole)