def get_cards(self, archived_state=github.GithubObject.NotSet):
assert archived_state is github.GithubObject.NotSet or isinstance(archived_state, (str, unicode)), archived_state<EOL>url_parameters = dict()<EOL>if archived_state is not github.GithubObject.NotSet:<EOL><INDENT>url_parameters["<STR_LIT>"] = archived_state<EOL><DEDENT>return github.PaginatedList.PaginatedList(<EOL>github.ProjectCard.ProjectCard,<EOL>self._requester,<EOL>self.url + "<STR_LIT>",<EOL>url_parameters,<EOL>{"<STR_LIT>": Consts.mediaTypeProjectsPreview}<EOL>)<EOL>
:calls: `GET /projects/columns/:column_id/cards <https://developer.github.com/v3/projects/cards/#list-project-cards>`_
:rtype: :class:`github.PaginatedList.PaginatedList` of :class:`github.ProjectCard.ProjectCard`
:param archived_state: string