def select_from_list(self, locator, *items):

         """Selects `*items` from list identified by `locator`

         If more than one value is given for a single-selection list, the last

         value will be selected. If the target list is a multi-selection list,

         and `*items` is an empty list, all values of the list will be selected.

         *items try to select by value then by label.

         It's faster to use 'by index/value/label' functions.

         An exception is raised for a single-selection list if the last

         value does not exist in the list and a warning for all other non-

         existing items. For a multi-selection list, an exception is raised

         for any and all non-existing values.

         Select list keywords work on both lists and combo boxes. Key attributes for

         select lists are `id` and `name`. See `introduction` for details about

         locating elements.

         """

         non_existing_items = []

         items_str = items and "option(s) '%s'" % ", ".join(items) or "all options"

         self._info("Selecting %s from list '%s'." % (items_str, locator))

         select = self._get_select_list(locator)

         if not items:

             for i in range(len(select.options)):

                 select.select_by_index(i)

             return

         for item in items:

             try:

                 select.select_by_value(item)

             except:

                 try:

                     select.select_by_visible_text(item)

                 except:

                     non_existing_items = non_existing_items + [item]

                     continue

         if any(non_existing_items):

             if select.is_multiple:

                 raise ValueError("Options '%s' not in list '%s'." % (", ".join(non_existing_items), locator))

             else:

                 if any (non_existing_items[:-1]):

                     items_str = non_existing_items[:-1] and "Option(s) '%s'" % ", ".join(non_existing_items[:-1])

                     self._warn("%s not found within list '%s'." % (items_str, locator))

                 if items and items[-1] in non_existing_items:

                     raise ValueError("Option '%s' not in list '%s'." % (items[-1], locator))