【问题标题】:how to web scrape hidden text within accordion Python如何在手风琴Python中抓取隐藏的文本
【发布时间】:2019-05-16 23:07:29
【问题描述】:

我编写了一个简单的脚本,它返回来自澳大利亚赌博网站的特定信息。

它工作得很好,但是我在自动打开每个手风琴下拉菜单时遇到了很多麻烦。我的脚本如下。

from selenium import webdriver
import time

chrome_path =r"C:\Users\Tom\Desktop\chromedriver.exe"
driver = webdriver.Chrome(chrome_path)
driver.get("https://pointsbet.com.au/basketball/NBA")

time.sleep(2)

driver.find_element_by_xpath("""/html/body/div[1]/div[2]/sport-competition-component/div[1]/div[2]/div[1]/div/event-list/div[1]/event/div/header/div[1]/h2/a""").click()
time.sleep(2)


posts = driver.find_elements_by_class_name("market")
for post in posts:
    print(post.text)
    with open('output.xls',mode ='a') as f:
        f.write(post.text)
        f.write('\n')

driver.quit()

脚本打印类名“market”中包含的所有可见文本。

输出如下:

HEAD TO HEAD
Brooklyn Nets
1.29
Atlanta Hawks
3.78
LINE
Brooklyn Nets -8.0
1.95
Atlanta Hawks +8.0
1.89
TOTAL POINTS
Over 227.0
1.91
Under 227.0
1.91

我的问题是手风琴下有隐藏文本。看截图: screenshot

-例如,我无法抓取标题“双重结果”下的数据

一旦被“点击”,脚本就可以正常工作。

我编写了一些脚本来自动点击手风琴,但不幸的是 xpath 名称会随着每次匹配而改变。

有谁知道如何自动一次点击所有手风琴(不知道元素信息),或者有没有人有替代解决方案。

欢迎任何帮助,谢谢

更新:

from selenium import webdriver
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.common.by import By
import time


chrome_path =r"C:\Users\Tom\Desktop\chromedriver.exe"

d = webdriver.Chrome(chrome_path)
d.get("https://pointsbet.com.au/basketball/NCAA-March-Madness")

time.sleep(2)

d.find_element_by_xpath("""/html/body/div[1]/div[2]/sport-competition-component/div[1]/div[2]/div[1]/div/event-list/div[1]/event/div/header/div[1]/h2/a""").click()
time.sleep(2)

expandable = WebDriverWait(d, 10).until(EC.element_to_be_clickable((By.CSS_SELECTOR, ".h2.accordion-toggle.event-name")))
expandables = d.find_elements_by_css_selector('.h2.accordion-toggle.event-name')
for item in expandables:
    item.click()


posts = d.find_elements_by_class_name("market")
for post in posts:
    print(post.text)
    with open('output.xls',mode ='a') as f:
        f.write(post.text)
        f.write('\n')

d.quit()

错误:

Traceback (most recent call last):
  File "C:\Users\Tom\Desktop\Python test\points1 - Copy.py", line 21, in <module>
    item.click()
  File "C:\Users\Tom\AppData\Roaming\Python\Python37\site-packages\selenium\webdriver\remote\webelement.py", line 80, in click
    self._execute(Command.CLICK_ELEMENT)
  File "C:\Users\Tom\AppData\Roaming\Python\Python37\site-packages\selenium\webdriver\remote\webelement.py", line 633, in _execute
    return self._parent.execute(command, params)
  File "C:\Users\Tom\AppData\Roaming\Python\Python37\site-packages\selenium\webdriver\remote\webdriver.py", line 321, in execute
    self.error_handler.check_response(response)
  File "C:\Users\Tom\AppData\Roaming\Python\Python37\site-packages\selenium\webdriver\remote\errorhandler.py", line 242, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.ElementNotVisibleException: Message: element not interactable
  (Session info: chrome=73.0.3683.86)
  (Driver info: chromedriver=2.43.600210 (68dcf5eebde37173d4027fa8635e332711d2874a),platform=Windows NT 10.0.17134 x86_64)

【问题讨论】:

    标签: python selenium web-scraping


    【解决方案1】:

    您可以使用 css 类选择器来获取下拉列表的集合,然后通过迭代集合来单击它们。示例页面:

    from selenium import webdriver
    from selenium.webdriver.support.ui import WebDriverWait
    from selenium.webdriver.support import expected_conditions as EC
    from selenium.webdriver.common.by import By
    
    d = webdriver.Chrome()
    d.get("https://pointsbet.com.au/basketball/NBA/58738")
    expandable = WebDriverWait(d, 10).until(EC.element_to_be_clickable((By.CSS_SELECTOR, ".h2.accordion-toggle.event-name")))
    expandables = d.find_elements_by_css_selector('.h2.accordion-toggle.event-name')
    for item in expandables:
        item.click()
    

    【讨论】:

    • QHarr,这对我帮助很大。我对同一网站下的不同页面使用相同的代码。但是上面的可扩展元素似乎不可点击。您是如何获得 CSS_selector 的?
    • 选择页面上的元素 > 右键单击​​检查 > 然后右键单击元素复制选择器。虽然我习惯阅读 css,所以我通常通过查看 html 来确定我想要的选择器。复制选择器可以提供比实际需要更长的路径。您需要尽可能短的选择器,并尽可能使用 id 或 class。
    • 是否有任何理由说明可扩展组件不再可交互?
    • 我已经添加了更新的代码和问题中出现的错误。
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