在硒中按下按钮后刷新页面

Question

嗨，点击提交按钮后，我在雅虎上尝试了很多次这段代码页面似乎被刷新了，因为我无法按下相同的按钮。

这是我的代码

import os
from tkinter import *
from tkinter import filedialog
import selenium
import time
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.support.ui import Select
from selenium import webdriver
from selenium import webdriver
import contextlib as textmanager
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
PATH= "C:chromedriverschromedriver.exe"
driver= webdriver.Chrome(PATH)
list=[]
file= open("numbers.txt", "r")
for line in file:
line = line.strip() #preprocess line
list.append(line)



driver.get("https://www.yahoo.com/")

element = WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//*[@id='consent-page']/div/div/div/form/div[2]/div[2]/button")))
element.click();
time.sleep(1)
sign_in= driver.find_element_by_xpath("//*[@id='ybar-inner-wrap']/div[3]/div/div[3]/div[1]/div/a").click()
time.sleep(1)
forgot_phone= driver.find_element_by_xpath("//*[@id='mbr-forgot-link']").click()
time.sleep(2)
inputt= driver.find_element_by_id("username")
time.sleep(2)
buttonn= driver.find_element_by_xpath("//*[@id='yid-challenge']/form/div[2]/button")
counter=0
nonumber= open("nonumber.txt","w")
while counter != len(list):
inputt.send_keys(list[counter])
time.sleep(1)
buttonn.click()
if len(driver.find_elements_by_css_selector("p[data-error]")) > 0 :
inputt.clear()
nonumber.write(list[counter])
nonumber.close()
counter=counter+1

这是一个错误，它说按钮不可点击，但在第一次运行时它可以工作，我不确定是按钮或输入区域的问题

Traceback (most recent call last):
File "c:Usersramhelsinkiprojectsslenium.py", line 54, in <module>
inputt.send_keys(list[counter])
File "C:UsersramhelsinkiAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesseleniumwebdriverremotewebelement.py", line 477, in send_keys
self._execute(Command.SEND_KEYS_TO_ELEMENT,
File "C:UsersramhelsinkiAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesseleniumwebdriverremotewebelement.py", line 633, in _execute
return self._parent.execute(command, params)
File "C:UsersramhelsinkiAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesseleniumwebdriverremotewebdriver.py", line 321, in execute
self.error_handler.check_response(response)
File "C:UsersramhelsinkiAppDataLocalPackagesPythonSoftwareFoundation.Python.3.9_qbz5n2kfra8p0LocalCachelocal-packagesPython39site-packagesseleniumwebdriverremoteerrorhandler.py", line 242, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.StaleElementReferenceException: Message: stale element reference: element is not attached to the page document
(Session info: chrome=91.0.4472.124)

Answer 1

每次更改/刷新网页时，Selenium以前获取的所有web元素都将变得不相关。这就是stale element reference异常的原因
对于您的代码，由于页面会在错误输入的情况下刷新，我建议在每次更改页面后再次获取元素，因此代码将如下所示：

time.sleep(2)
counter=0
nonumber= open("nonumber.txt","w")
while counter != len(list):
inputt= driver.find_element_by_id("username")
buttonn= driver.find_element_by_xpath("//button")
inputt.send_keys(list[counter])
time.sleep(1)
buttonn.click()
if len(driver.find_elements_by_css_selector("p[data-error]")) > 0 :
inputt= driver.find_element_by_id("username")
inputt.clear()
nonumber.write(list[counter])
nonumber.close()
counter=counter+1