Python的硒：陈旧的元素参考异常错误

Question

我在这些循环迭代面对谎言的问题，一旦第一个文件是从网页下载我收到一个错误：

“selenium.common.exceptions。 StaleElementReferenceException：消息：陈旧的元素引用：元素不再附加到DOM或页面已被刷新“

”97081 data-extension xml“是迭代中的第二个可下载文件。我在此附上代码，任何建议，以纠正这将非常感激。

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

fp = webdriver.FirefoxProfile() 

fp.set_preference("browser.download.folderList", 2) 
fp.set_preference("browser.download.manager.showWhenStarting", False) 
fp.set_preference("browser.download.dir", "F:\Projects\Poli_Map\DatG_Py_Dat") 
fp.set_preference("browser.helperApps.neverAsk.saveToDisk", "text/xml") 

driver = webdriver.Firefox(firefox_profile=fp) 

driver.get('https://data.gov.in/catalog/variety-wise-daily-market-prices-data-cauliflower') 
wait = WebDriverWait(driver, 10) 

allelements = driver.find_elements_by_xpath("//a[text()='xml']") 

for element in allelements: 
    element.click() 
    class FormPage(object): 
     def fill_form(self, data): 
      driver.execute_script("document.getElementById('edit-download-reasons-non-commercial').click()") 
      driver.execute_script("document.getElementById('edit-reasons-d-rd').click()") 
      driver.find_element_by_xpath('//input[@name = "name_d"]').send_keys(data['name_d']) 
      driver.find_element_by_xpath('//input[@name = "mail_d"]').send_keys(data['mail_d']) 
      return self 

     def submit(self): 
      driver.execute_script("document.getElementById('edit-submit').click()") 

    data = { 
     'name_d': 'xyz', 
     'mail_d': 'xyz@outlook.com', 
    } 
    time.sleep(5) 
    FormPage().fill_form(data).submit() 

    time.sleep(5) 
    window_before = driver.window_handles[0] 
    driver.switch_to_window(window_before) 
    driver.back() 

Answer 1

一旦你调用submit() webElements内allelements后，页面刷新没有更多有效的而不是

allelements = driver.find_elements_by_xpath("//a[text()='xml']") 

for element in allelements: 
    element.click() 

尝试

allelements = len(driver.find_elements_by_xpath("//a[text()='xml']")) 

for index in range(allelements): 
    driver.find_elements_by_xpath("//a[text()='xml']")[index].click()