How to use the todoman.exceptions function in todoman

def handle_error():
    try:
        yield
    except exceptions.TodomanException as e:
        click.echo(e)
        sys.exit(e.EXIT_CODE)

def todo(self, id, read_only=False):
        # XXX: DON'T USE READ_ONLY
        result = self._conn.execute('''
            SELECT todos.*, files.list_name, files.path
              FROM todos, files
            WHERE files.path = todos.file_path
              AND todos.id = ?
        ''', (id,)
        ).fetchone()

        if not result:
            raise exceptions.NoSuchTodo(id)

        if not read_only:
            count = self._conn.execute('''
                SELECT count(id) AS c
                  FROM files, todos
                 WHERE todos.file_path = files.path
                   AND path=?
            ''', (result['path'],)
            ).fetchone()
            if count['c'] > 1:
                raise exceptions.ReadOnlyTodo(result['path'])

        return self._todo_from_db(result)

ctx.formatter_class = formatters.PorcelainFormatter
        else:
            ctx.formatter_class = formatters.DefaultFormatter

        color = color or ctx.config['main']['color']
        if color == 'always':
            click_ctx.color = True
        elif color == 'never':
            click_ctx.color = False

        paths = [
            path for path in glob.iglob(expanduser(ctx.config["main"]["path"]))
            if isdir(path)
        ]
        if len(paths) == 0:
            raise exceptions.NoListsFound(ctx.config["main"]["path"])

        ctx.db = Database(paths, ctx.config['main']['cache_path'])

        # Make python actually use LC_TIME, or the user's locale settings
        locale.setlocale(locale.LC_TIME, "")

''', (id,)
        ).fetchone()

        if not result:
            raise exceptions.NoSuchTodo(id)

        if not read_only:
            count = self._conn.execute('''
                SELECT count(id) AS c
                  FROM files, todos
                 WHERE todos.file_path = files.path
                   AND path=?
            ''', (result['path'],)
            ).fetchone()
            if count['c'] > 1:
                raise exceptions.ReadOnlyTodo(result['path'])

        return self._todo_from_db(result)