Selenium2Library系列 keywords 之 _SelectElementKeywords 之 unselect_from_list_by

本文介绍了一个Python方法，用于从指定位置选择的列表中取消选定的标签。适用于选择列表和组合框，支持多选，并通过直观的代码示例展示了其用法。

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 1     def unselect_from_list_by_label(self, locator, *labels):
 2         """Unselects `*labels` from list identified by `locator`
 3 
 4         Select list keywords work on both lists and combo boxes. Key attributes for
 5         select lists are `id` and `name`. See `introduction` for details about
 6         locating elements.
 7         """
 8         if not labels:
 9             raise ValueError("No value given.")
10         items_str = "label(s) '%s'" % ", ".join(labels)
11         self._info("Unselecting %s from list '%s'." % (items_str, locator))
12 
13         select = self._get_select_list(locator)
14         if not select.is_multiple:
15             raise RuntimeError("Keyword 'Unselect from list' works only for multiselect lists.")
16 
17         for label in labels:
18             select.deselect_by_visible_text(label)