def _get_revision(self, revision):
        """
        Get's an ID revision given as str. This will always return a fill
        40 char revision number

        :param revision: str or int or None
        """

        if self._empty:
            raise EmptyRepositoryError("There are no changesets yet")

        if revision in [-1, 'tip', None]:
            revision = 'tip'

        try:
            revision = hex(self._repo.lookup(revision))
        except (IndexError, ValueError, RepoLookupError, TypeError):
            raise ChangesetDoesNotExistError("Revision %s does not "
                                    "exist for this repository"
                                    % (revision))
        return revision
def _get_revision ( self , revision ) : if self . _empty : raise EmptyRepositoryError ( "There are no changesets yet" ) if revision in [ - 1 , 'tip' , None ] : revision = 'tip' try : revision = hex ( self . _repo . lookup ( revision ) ) except ( IndexError , ValueError , RepoLookupError , TypeError ) : raise ChangesetDoesNotExistError ( "Revision %s does not " "exist for this repository" % ( revision ) ) return revision
Get's an ID revision given as str. This will always return a fill
        40 char revision number

        :param revision: str or int or None