Selenium Python webscraper未单击“加载更多”按钮

Question

我是新手，如果我搞混了什么，很抱歉。我正在用Python编写一个SeleniumWebScraper，从《纽约时报》的文章档案中删除所有标题和日期

这是链接：https://www.nytimes.com/search?dropmab=true&endDate=20120103&query=&sections=Business%7Cnyt%3A%2F%2Fsection%2F0415b2b0-513a-5e78-80da-21ab770cb753&sort=best&startDate=20070101

在页面底部有一个“显示更多”按钮，每次点击它都会加载10篇以上的文章。因此，我基本上希望点击“显示更多”按钮，直到没有更多的文章要加载，然后在整个页面上搜索标题和日期。以下是我的尝试：

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
from selenium.common.exceptions import TimeoutException
import pandas as pd


options = webdriver.ChromeOptions() 
options.add_argument("start-maximized")
options.add_argument('disable-infobars')
driver=webdriver.Chrome(chrome_options=options, 
executable_path=r"//usr/local/Caskroom/chromedriver/81.0.4044.69/chromedriver")
driver.get("https://www.nytimes.com/search?dropmab=true&endDate=20120103&query=&sections=Business%7Cnyt%3A%2F%2Fsection%2F0415b2b0-513a-5e78-80da-21ab770cb753&sort=best&startDate=20070101")

WebDriverWait(driver, 40).until(EC.visibility_of_element_located((By.XPATH, "//div[@class='css-vsuiox']//button[@data-testid='search-show-more-button']")))
while True:
    try:
        WebDriverWait(driver, 40).until(EC.element_to_be_clickable((By.XPATH, "//div[@class='css-vsuiox']//button[@data-testid='search-show-more-button']"))).click()
    print("MORE button clicked")
    except TimeoutException:
        break
driver.quit()


headlines_element = browser.find_elements_by_xpath('//h4[@class="css-2fgx4k"]')
headlines = [x.text for x in headlines_element]
print('headlines:')
print(headlines, '\n')

dates_element = browser.find_elements_by_xpath("//time[@class='css-17ubb9w']")
dates = [x.text for x in dates_element]
print("dates:")
print(dates, '\n')

for headlines, dates in zip(headlines, dates):
    print("Headlines : Dates")
    print(headlines + ": " + dates, '\n')

但是当我运行脚本时，showmore按钮会点击它几次，然后随机点击其中一篇文章并离开。我还尝试将标题和日期抓取嵌套在While循环中，但我一直得到一个“TabError:缩进中制表符和空格的使用不一致”

请帮忙！谢谢

Answer 1

wait = WebDriverWait(driver, 10)
driver.get("https://www.nytimes.com/search?dropmab=true&endDate=20120103&query=&sections=Business%7Cnyt%3A%2F%2Fsection%2F0415b2b0-513a-5e78-80da-21ab770cb753&sort=best&startDate=20070101")

times=wait.until(EC.presence_of_all_elements_located((By.XPATH, "//div[@class='css-46b038']//ol[*]//li//time")))


elements=wait.until(EC.presence_of_all_elements_located((By.XPATH, "//h4")))
for element in elements:
    for time in times:
        print time.text
        print element.text
        break

输出：

Answer 2

我觉得你在使用标签，我建议不要使用它

您可以使用以下选项之一

选项1:

在python代码中使用autopep8。只需使用这个命令autopep8 -i yourFileName.py

以下是autopep8:https://pypi.org/project/autopep8/的文档

选项2:

 1. set your IDE to use indentation with 4 spaces
 2. In your existing code please replace all the tabs with 4 spaces