python - 在 Python 中使用 Selenium 查找 YouTube 视频中的评论数时，CSS 选择器应该是什么？

Question

在路径上设置 chromedriver 并粘贴搜索的 URL:

driver = webdriver.Chrome('**************') 
driver.get("https://www.youtube.com/results?search_query=youtube+keywords&sp=EgIQAQ%253D%253D")

检索视频链接:

user_data = driver.find_elements_by_xpath('//*[@id="video-title"]') <br>
links = []<br>
for i in user_data:<br>
            links.append(i.get_attribute('href'))

使用我们将收集的新信息创建一个新的 df:

df = pd.DataFrame(columns = ['v_search', 'v_id','v_comments'])

使用 Selenium 查找剩余数据:

wait = WebDriverWait(driver, 10)
v_search = "Youtube Keyword" 
for x in links[:1]:<br>
        driver.get(x)<br>
        v_id = x.strip('https://www.youtube.com/watch?v=') 

        ### HERE IS MY QUESTION.
        v_comments = wait.until(EC.presence_of_element_located((By.CSS_SELECTOR, "#count > yt-formatted-string"))).text

        # Throw information in the dataframe we defined before (fills row per row).
        df.loc[len(df)] = [v_search,v_id,v_comments]
        sleep(0.5)    #in seconds

Traceback error

Answer 1

以下 CSS 选择器对我有用:
#count>.count-text.style-scope.ytd-comments-header-renderer
测试如下:

document.querySelector("#count>.count-text.style-scope.ytd-comments-header-renderer").innerHTML;

结果将类似于 -- x Comments。

PS:最好使用 visibility_of_element_located预期条件。所以，在你的情况下，它将是:

from selenium.webdriver.common.keys import Keys


...
driver.find_element_by_tag_name("body").send_keys(Keys.PAGE_DOWN)
v_comments = wait.until(EC.visibility_of_element_located((By.CSS_SELECTOR, "#count>.count-text.style-scope.ytd-comments-header-renderer"))).text

我希望它能帮助你!