from selenium import webdriver
import win32api
import win32con
from time import sleep
driver = webdriver.Ie()

import time
from selenium import webdriver

driver.maximize_window()
driver.implicitly_wait(6)
driver.get("https://www.baidu.com")
time.sleep(1)

driver.execute_script("window.alert('这是一个测试Alert弹窗');")
time.sleep(2)
driver.switch_to_alert().accept() # 点击弹出里面的确定按钮

from selenium import webdriver
import win32api
import win32con
from time import sleep
driver = webdriver.Ie()
driver.get('http://10.82.21.190')
driver.switch_to_alert().send_keys("admin")
win32api.keybd_event(9, 0, 0, 0) # ctrl键位码是9
win32api.keybd_event(9, 0, win32con.KEYEVENTF_KEYUP, 0) # 释放按键
win32api.keybd_event(65, 0, 0, 0) # a键位码是65
win32api.keybd_event(65, 0, win32con.KEYEVENTF_KEYUP, 0) # 释放按键
win32api.keybd_event(68, 0, 0, 0) # d键位码是68
win32api.keybd_event(68, 0, win32con.KEYEVENTF_KEYUP, 0) # 释放按键
win32api.keybd_event(77, 0, 0, 0) # m键位码是77
win32api.keybd_event(77, 0, win32con.KEYEVENTF_KEYUP, 0) # 释放按键
win32api.keybd_event(73, 0, 0, 0) # i键位码是73
win32api.keybd_event(73, 0, win32con.KEYEVENTF_KEYUP, 0) # 释放按键
win32api.keybd_event(78, 0, 0, 0) # n键位码是78
win32api.keybd_event(78, 0, win32con.KEYEVENTF_KEYUP, 0) # 释放按键
driver.switch_to_alert().accept()
sleep(3)
driver.find_element_by_css_selector("#cancelBtn").click()

　　driver.switch_to_alert().accept()可以模拟点击确定，关闭弹窗按钮，这是一个老方法，新方法为driver.switch_to.alert().accept(),但是尝试新方法不能实现该功能，所以仍采用老方法。