模态窗口中不可见的元素 - Selenium Python

Question

我正在尝试登录网页以便从中抓取数据，但每次尝试时，我都会收到错误 Element Not Visible。我试图单击的元素是模式窗口内的一个按钮，但该窗口的 html 仅在单击登录按钮后出现。我可以点击登录按钮，但我无法点击之后弹出的教师按钮。有什么想法吗？

from selenium import webdriver
from selenium.webdriver.common.keys import Keys

login_url = 'https://edpuzzle.com/'
username = '***'
password = '***'
ChromeDriver = r'C:\Users\admin\Python\chromedriver.exe'

driver = webdriver.Chrome(ChromeDriver)
driver.get(login_url)
driver.find_element_by_css_selector('button.btn.btn-default-
transparent').click()
driver.find_element_by_css_selector('p.modal-title.text-lg.text-center.edp-
role-title')
driver.find_element_by_css_selector('button.btn.white-btn.btn-lg.btn-
block.big-btn.edp-teacher-role').click()

Answer 1

您试图在按钮实际可见之前单击它。您需要等待一段时间：

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

driver.get(login_url)
driver.find_element_by_id('edp-login').click()
wait(driver, 10).until(EC.visibility_of_element_located((By.CSS_SELECTOR, "button.btn.white-btn.btn-lg.btn-block.big-btn.edp-teacher-role"))).click()