1     def unselect_from_list(self, locator, *items): 2         """Unselects given values from select list identified by locator. 3  4         As a special case, giving empty list as `*items` will remove all 5         selections. 6  7         *items try to unselect by value AND by label. 8  9         It's faster to use 'by index/value/label' functions.10 11         Select list keywords work on both lists and combo boxes. Key attributes for12         select lists are `id` and `name`. See `introduction` for details about13         locating elements.14         """15         items_str = items and "option(s) '%s'" % ", ".join(items) or "all options"16         self._info("Unselecting %s from list '%s'." % (items_str, locator))17 18         select = self._get_select_list(locator)19         if not select.is_multiple:20             raise RuntimeError("Keyword 'Unselect from list' works only for multiselect lists.")21 22         if not items:23             select.deselect_all()24             return25 26         select, options = self._get_select_list_options(select)27         for item in items:28             select.deselect_by_value(item)29             select.deselect_by_visible_text(item)

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

相似方法：

公共方法 移除所给items的选中状态

接收参数：locator，*labels/*values

18行：使用方法，返回Select对象