如何解析陈旧的元素引用-selenium(python)

我知道这个问题被问了很多次,但我似乎不能把任何一个决议应用于我自己的情况。

我正在抓取一个网站的某些价值观,然而,价值观存在于网站上的不同配置文件。因此,我登录、检索值、注销、在新配置文件下重新登录、检索值、注销等。

该问题出现在一个悬停菜单项上,该菜单项似乎正在生成过时的元素引用。我想这是因为我注销后又重新登录?这是否可以修复,或者我应该只是启动一个新的webdriver实例?

这是到目前为止我的代码,请记住,我对python很陌生,所以请原谅任何愚蠢的错误或假设:

from selenium import webdriver
from selenium.webdriver.support import ui
from selenium.webdriver.support import expected_conditions as EC
from selenium.webdriver.chrome.options import Options
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver import ActionChains
from selenium.common.exceptions import StaleElementReferenceException

options = Options()
options.add_argument("start-maximized")
driver = webdriver.Chrome(options=options, executable_path=r'C:/Users/SChogle/Downloads/chromedriver.exe')
actions = ActionChains(driver)

driver.get("xxxxx")

iframe = ui.WebDriverWait(driver, 10).until(EC.visibility_of_element_located((By.TAG_NAME, "iframe")))

driver.switch_to.frame(iframe)

driver.find_element_by_id("Username").send_keys("xxxx")
driver.find_element_by_id("Password").send_keys("xxxx")
driver.find_element_by_id("submit_button").click()

driver.switch_to.default_content()

Investment = WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "div.menu.menuTopCenter > ul > li:nth-child(3) > a")))
actions.move_to_element(Investment).perform()

Investment_Summary = (WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.CSS_SELECTOR,"li:nth-child(3) > div > div:nth-child(1) > a")))).click()

Imp_Prov = WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "div#product-UT td.portfolioProductContractFundHeaderValueRight"))).get_attribute('innerHTML').strip()
print(Imp_Prov)

#log-out
log_out = WebDriverWait(driver, 10).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "a#btnLogoff"))).click()

#log back in

iframe = ui.WebDriverWait(driver, 10).until(EC.visibility_of_element_located((By.TAG_NAME, "iframe")))

driver.switch_to.frame(iframe)

driver.find_element_by_id("Username").send_keys("xxxx")
driver.find_element_by_id("Password").send_keys("xxxx")
driver.find_element_by_id("submit_button").click()

driver.switch_to.default_content()

tries = 0
while tries < 3:
    try:
        Investment = WebDriverWait(driver, 10,).until(EC.element_to_be_clickable((By.CSS_SELECTOR,  "div.menu.menuTopCenter > ul > li:nth-child(3) > a")))
        actions.move_to_element(Investment).perform()
        tries = 3

    except StaleElementReferenceException:
        tries += 1

Investment_Summary1 = (WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.CSS_SELECTOR,"li:nth-child(3) > div > div:nth-child(1) > a")))).click()

Imp_Pen = WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "div#product-UT td.portfolioProductContractFundHeaderValueRight"))).get_attribute('innerHTML').strip()
print(Imp_Pen)

请参阅下面的stacktrace:

174,256,175.68 ZAR
Traceback (most recent call last):
  File "C:/Users/SChogle/PycharmProjects/test1/venv/Web Scraping - BCI.py", line 60, in <module>
    Investment_Summary1 = (WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.CSS_SELECTOR,"li:nth-child(3) > div > div:nth-child(1) > a")))).click()
  File "C:\Users\SChogle\PycharmProjects\test1\venv\lib\site-packages\selenium\webdriver\support\wait.py", line 80, in until
    raise TimeoutException(message, screen, stacktrace)
selenium.common.exceptions.TimeoutException: Message: 


Process finished with exit code 1