Selenium 4.8.2中prompt类型alert的send_keys()方法失效无报错问题

在使用Selenium 4.8.2版本时，调用send_keys()方法向网页的prompt类型alert输入文本时无任何反应，且未抛出任何异常，已在两个包含该类prompt的网站测试，测试代码如下：

from selenium import webdriver
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.support.wait import WebDriverWait
from selenium.webdriver.support import expected_conditions as ec
from selenium.webdriver.common.by import By
from selenium.webdriver.common.alert import Alert

import sys
import time

def launch_browser(url:str = None, is_hidden = False) -> webdriver.Chrome:

    chromedriver_path = r"D:\Drivers\chromedriver.exe"
    chrome_service = Service(chromedriver_path)

    browser_path = r"C:\Program Files\Google\Chrome\Application\chrome.exe"
    chrome_options = webdriver.ChromeOptions()
    chrome_options.binary_location = browser_path
    chrome_options.add_argument('--start-maximized')
    chrome_options.add_argument('--log-level=3')
    
    if is_hidden != False: chrome_options.add_argument('--headless')
    
    try:
        driver = webdriver.Chrome(service=chrome_service, options=chrome_options)
    except Exception as e:
        print(e)
        sys.exit()

    if url != None: driver.get(url)

    return(driver)

def sample_01():

    url = 'https://www.selenium.dev/documentation/webdriver/interactions/alerts/'
    driver = launch_browser(url)

    element = driver.find_element(By.LINK_TEXT, 'See a sample prompt')

    WebDriverWait(driver, timeout=5, poll_frequency=1).until(ec.element_to_be_clickable(element)).click()
    WebDriverWait(driver, timeout=5, poll_frequency=0.5).until(ec.alert_is_present())
    alert = Alert(driver)

    time.sleep(2)
    try:
        alert.send_keys('Selenium')
    except Exception as e:
        print(e)

    print(alert.text)
    
    time.sleep(5)
    driver.quit()

def sample_02():
    url = 'https://www.w3schools.com/jsref/tryit.asp?filename=tryjsref_prompt'

    driver = launch_browser(url)

    driver.switch_to.frame("iframeResult")
    driver.find_element(By.XPATH, '//button[@onclick="myFunction()"]').click()

    WebDriverWait(driver, 10, 1).until(ec.alert_is_present())

    alert = Alert(driver)

    try:
        alert.send_keys('name_of_person')
    except Exception as e:
        print(e)

    print(alert.text)
    time.sleep(5)

    

if __name__ == '__main__':
    sample_01()
    sample_02()

• 确保Chrome与ChromeDriver版本匹配：Selenium 4.8.2要求ChromeDriver版本与本地Chrome浏览器版本完全一致，版本不匹配会直接导致alert交互逻辑异常。
• 替换Alert(driver)为原生切换方式：部分场景下Alert类的封装存在兼容性问题，直接使用driver.switch_to.alert（或通过显式等待返回alert对象）更稳定。
• 移除冗余time.sleep()，强化弹窗就绪检查：显式等待alert_is_present()后，弹窗可能仍未完全加载输入框，通过直接操作+异常捕获的方式替代固定等待，能适配不同加载速度的场景。
• 无头模式适配：若使用无头模式，需将参数改为--headless=new（Chrome 112+版本），旧无头模式不支持alert交互。

from selenium import webdriver
from selenium.webdriver.chrome.service import Service
from selenium.webdriver.support.wait import WebDriverWait
from selenium.webdriver.support import expected_conditions as ec
from selenium.webdriver.common.by import By

import sys

def launch_browser(url:str = None, is_hidden = False) -> webdriver.Chrome:
    chromedriver_path = r"D:\Drivers\chromedriver.exe"
    chrome_service = Service(chromedriver_path)

    browser_path = r"C:\Program Files\Google\Chrome\Application\chrome.exe"
    chrome_options = webdriver.ChromeOptions()
    chrome_options.binary_location = browser_path
    chrome_options.add_argument('--start-maximized')
    chrome_options.add_argument('--log-level=3')
    
    if is_hidden:
        chrome_options.add_argument('--headless=new')  # Chrome 112+无头模式需用此参数支持alert
    
    try:
        driver = webdriver.Chrome(service=chrome_service, options=chrome_options)
    except Exception as e:
        print(e)
        sys.exit()

    if url:
        driver.get(url)

    return driver

def sample_01():
    url = 'https://www.selenium.dev/documentation/webdriver/interactions/alerts/'
    driver = launch_browser(url)

    element = driver.find_element(By.LINK_TEXT, 'See a sample prompt')
    WebDriverWait(driver, 5).until(ec.element_to_be_clickable(element)).click()
    
    # 等待alert出现并直接获取对象
    alert = WebDriverWait(driver, 5).until(ec.alert_is_present())
    
    try:
        alert.send_keys('Selenium')
        print("输入文本成功")
    except Exception as e:
        print(f"输入失败：{e}")

    print(f"Alert文本：{alert.text}")
    alert.accept()  # 确认弹窗避免残留
    driver.quit()

def sample_02():
    url = 'https://www.w3schools.com/jsref/tryit.asp?filename=tryjsref_prompt'
    driver = launch_browser(url)

    driver.switch_to.frame("iframeResult")
    driver.find_element(By.XPATH, '//button[@onclick="myFunction()"]').click()
    
    # 等待alert出现并直接获取对象
    alert = WebDriverWait(driver, 10).until(ec.alert_is_present())
    
    try:
        alert.send_keys('name_of_person')
        print("输入文本成功")
    except Exception as e:
        print(f"输入失败：{e}")

    print(f"Alert文本：{alert.text}")
    alert.accept()
    driver.quit()

if __name__ == '__main__':
    sample_01()
    sample_02()

内容的提问来源于stack exchange，提问作者AbhinavB