Selenium2Library系列 keywords 之 _SelectElementKeywords 之 select_from_list(self, locator, *items)

    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))

方法名：select_from_list(self, locator, *items)

相似方法：

公共方法 选中所传入items,如果给了多个值，并且是single-selection list，则最后一值会被选中；如果是 multi-selection list，并且items为空，则所有options都会被选中

接收参数：locator，*items(labels/values)

26行：使用_get_select_list(self, locator)方法，返回Select对象