Как извлечь атрибуты title и href из вопросов на странице поиска reddit.com с помощью Selenium Python

Question

Я хочу очистить ссылку и заголовок всех вопросов на странице https://www.reddit.com/search?q=Expiration&type=link&sort=new. Элемент имеет следующую структуру:

<a data-click-id="body" class="SQnoC3ObvgnGjWt90zD9Z" href="/r/excel/comments/ayiahc/calculating_expiration_dates_previous_solution_no/">
    <h2 class="s1okktje-0 cDxKta">
        <span style="font-weight:normal">Calculating Expiration Dates - Previous Solution No Longer Works</span>
    </h2>
</a>

Я использую questions = driver.find_elements_by_xpath('//a[@data-click-id="body"]'), чтобы получить вопросы, затем итерируем их по for. И я могу использовать question.get_attribute('href'), чтобы получить ссылку.

Однако я не знаю, как извлечь заголовок внутри span (из question).

Кто-нибудь знает, как это сделать?

Answer 1

В селене

question.find_elements_by_xpath.('./h2/span').text

вернет текстовый элемент базового элемента span в вашем цикле for

с lxml

import requests
from lxml import html

UA = {'User-agent': 'Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:47.0) Gecko/20100101 Firefox/47.0 Mozilla/5.0 (Macintosh; Intel Mac OS X x.y; rv:42.0) Gecko/20100101 Firefox/42.0'}

page = requests.get('https://www.reddit.com/search?q=Expiration&type=link&sort=new',
                    headers = UA)

tree = html.fromstring(page.content)

questions = tree.xpath('//a[@data-click-id="body"]')

parsed_q = []

for question in questions:
    url = question.xpath('./@href')[0]
    title = question.xpath('./h2/span/text()')[0]
    print("Title: {} --- URL: {}".format(title,url))
    parsed_q.append(tuple([title,url]))

print(parsed_q)

Answer 2

Чтобы очистить атрибуты title и href всех вопросов на веб-странице , вам нужно вызвать WebDriverWait для visibility_of_all_elements_located() и вы можете использовать следующее решение:

• Кодовый блок:

  from selenium import webdriver
  from selenium.webdriver.common.by import By
  from selenium.webdriver.support.ui import WebDriverWait
  from selenium.webdriver.support import expected_conditions as EC
  
  options = webdriver.ChromeOptions()
  options.add_argument("start-maximized")
  options.add_argument("--disable-extensions")
  options.add_argument('disable-infobars')
  driver = webdriver.Chrome(chrome_options=options, executable_path=r'C:\Utility\BrowserDrivers\chromedriver.exe')
  driver.get("https://www.reddit.com/search?q=Expiration&type=link&sort=new")
  elements = WebDriverWait(driver, 30).until(EC.visibility_of_all_elements_located((By.XPATH, "//a[@data-click-id='body' and @href]")))
  question_title = [element.get_attribute("innerHTML") for element in WebDriverWait(driver, 30).until(EC.visibility_of_all_elements_located((By.XPATH, "//a[@data-click-id='body' and @href]/h2/span")))]
  question_link = [element.get_attribute("href") for element in WebDriverWait(driver, 30).until(EC.visibility_of_all_elements_located((By.XPATH, "//a[@data-click-id='body' and @href]")))]
  for i,j in zip(question_title, question_link):
      print("{} question link is {}".format(i, j))
  

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Answer 3

попробуйте ниже.

question.find_element_by_tag_name('span').text

или просто

question.text