在量角器中，如何在不依赖超时的情况下等待弹出窗口出现？

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC

driver = webdriver.Chrome()

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

wait = WebDriverWait(driver, 10)  # 最长等待时间为10秒
popup_locator = (By.ID, "popup")  # 弹出窗口的定位器

popup = wait.until(EC.visibility_of_element_located(popup_locator))