无法使用 selenium webdriver select 下拉列表中的元素

Unable to select an element from a dropdown list with selenium webdriver

我需要 select 在 Python 中使用 selenium webdriver 从下拉列表中选择一个元素。为此,我检查了有用的帖子,例如 Selecting a value from a drop-down option using selenium pythonhttps://sqa.stackexchange.com/questions/12029/how-do-i-work-with-dropdowns-in-selenium-webdriver?lq=1

我正在谈论的元素显示在下一个块中:

<div id="dayTab" style="height:20px" class="ui-tabs-panel ui-widget-content ui-corner-bottom ui-tabs-hide">
 <select class="input-small input-thin">
   <option value="2010">2010</option>
   <option value="2011">2011</option>
   <option value="2012">2012</option>
   <option value="2013">2013</option>
   <option value="2014">2014</option>
   <option value="2015">2015</option>
 </select>
</div>

我试过了Select()

yearselect = Select(browser.find_element_by_css_selector("select.input-small.input-thin"))
yearselect.select_by_value("2010")

虽然它找到了元素(确实如此),但我在第二行出现以下错误:

Traceback (most recent call last):
File "C:\Users\elek2\workspace\webdriving\src\gotonch.py", line 119, in <module>
yearselect.select_by_value("2010")
File "C:\Python34\lib\site-packages\selenium\webdriver\support\select.py", line 79, in select_by_value
self._setSelected(opt)
File "C:\Python34\lib\site-packages\selenium\webdriver\support\select.py", line 195, in _setSelected
option.click()
File "C:\Python34\lib\site-packages\selenium\webdriver\remote\webelement.py", line 74, in click
self._execute(Command.CLICK_ELEMENT)
File "C:\Python34\lib\site-packages\selenium\webdriver\remote\webelement.py", line 453, in _execute
return self._parent.execute(command, params)
File "C:\Python34\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 201, in execute
self.error_handler.check_response(response)
File "C:\Python34\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 181, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.ElementNotVisibleException: Message: element not visible: Element is not currently visible and may not be manipulated
(Session info: chrome=45.0.2454.101)
(Driver info: chromedriver=2.19.346078 (6f1f0cde889532d48ce8242342d0b84f94b114a1),platform=Windows NT 6.1 SP1 x86_64)

我不确定为什么会这样,但我也尝试使用 Click() 来 "open" 下拉列表

yearselect =browser.find_element_by_css_selector("select.input-small.input-thin").click()
yearselect.select_by_value("2010")

并且元素是可见的,但后来我明白了:

Traceback (most recent call last):
File "C:\Users\elek2\workspace\webdriving\src\gotonch.py", line 118, in <module>
yearselect = browser.find_element_by_css_selector("select.input-small.input-thin").click()
File "C:\Python34\lib\site-packages\selenium\webdriver\remote\webelement.py", line 74, in click
self._execute(Command.CLICK_ELEMENT)
File "C:\Python34\lib\site-packages\selenium\webdriver\remote\webelement.py", line 453, in _execute
return self._parent.execute(command, params)
File "C:\Python34\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 201, in execute
self.error_handler.check_response(response)
File "C:\Python34\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 181, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.ElementNotVisibleException: Message: element not visible
(Session info: chrome=45.0.2454.101)
(Driver info: chromedriver=2.19.346078   (6f1f0cde889532d48ce8242342d0b84f94b114a1),platform=Windows NT 6.1 SP1 x86_64)

如果我能够找到下拉列表并select,为什么元素仍然不可见?

编辑

LINGS 评论之后,我意识到 不止一个 元素具有我使用的 css 名称。

我在上面的块之后,但在那个块之前引用了另一个块,其中 div id="dayTab"... 不是 div id="monthTab"...,这显然是不可见的。我怎么能参考我想要的标签,没有ID。

毕竟很简单,我把首字母换成了:

yearselect = Select(browser.find_element_by_css_selector("select.input-small.input-thin"))
yearselect.select_by_value("2010")

有了这个:

yearselect = Select(browser.find_element_by_css_selector("#dayTab > select.input-small.input-thin"))
yearselect.select_by_value("2010")

只需找到正确的 CSS(或 XPath)即可。 Chrome 附加组件,例如 XPath Helper may help in this. Other tips on CSS selectors you may find in here。很高兴我帮助其他用户避免了这些烦人的错误。