selumium 中 xpath獲取文本、屬性正確寫法

報錯“The result of the xpath expression is: [object Attr]. It should be an element”

yutube爬蟲動態加載，需要用到selenium-webdriver，使用過程中，首先使用

find_elements_by_xpath進行批量標簽的定位選取，之后

使用find_element_by_xpath精細篩選選標簽的時候出現上面錯誤提示，

原因是這個webdriver的定位方法和瀏覽器xpath不一樣，不能直接定位到標簽的屬性

需要首先定位到webelement，之后get到屬性

正確

            try:
                temp['host_url'] = node.find_element_by_xpath('./div/div/div/ytd-video-meta-block/div/div/div/yt-formatted-string/a').get_attribute('href')
            except Exception as e:
                print(e)
            try:
                temp['show_url'] = node.find_element_by_xpath('./div/ytd-thumbnail/a').get_attribute('href')
            except Exception as e:
                print(e)
            try:
                temp['title'] = node.find_element_by_xpath('./div/div/div[1]/div/h3/a').get_attribute('title')
            except Exception as e:
                print(e)
            try:
                temp['user'] = node.find_element_by_xpath('./div/div/div/ytd-video-meta-block/div/div/div/yt-formatted-string/a').text
            except Exception as e:

錯誤：

try:
                temp['host_url'] = node.find_element_by_xpath('./div/div/div/ytd-video-meta-block/div/div/div/yt-formatted-string/a/@href')
            except Exception as e:
                print(e)
            try:
                temp['show_url'] = node.find_element_by_xpath('./div/ytd-thumbnail/a/@href')
            except Exception as e:
                print(e)
            try:
                temp['title'] = node.find_element_by_xpath('./div/div/div[1]/div/h3/a/@title')
            except Exception as e:
                print(e)
            try:
                temp['user'] = node.find_element_by_xpath('./div/div/div/ytd-video-meta-block/div/div/div/yt-formatted-string/a/text()')
            except Exception as e:
                print(e)