硒 Web 驱动程序 - 无法找到元素？

Question

法典from selenium import webdriverfrom selenium.webdriver.common.keys import Keysfrom selenium.webdriver.support.ui import WebDriverWaitfrom selenium.webdriver.support import expected_conditions as ECchrome = webdriver.Chrome(executable_path= 'C:\webdriver.exe\chromedriver.exe',port=9515)url = 'https://protonmail.com/'chrome.get(url)chrome.implicitly_wait(10)chrome.find_element_by_xpath('//*[@class="btn btn-default btn-short"]').click()chrome.find_element_by_class_name("panel-heading").click()chrome.find_element_by_id("freePlan").click()chrome.find_element_by_id('username')chrome.find_element_by_id("password").send_keys('password')chrome.find_element_by_id("passwordc").send_keys('password')断续器<input placeholder="Choose username" required="" name="username" messages="[object Object]" iframename="top" pattern=".{1,40}" id="username" class="input">问题chrome.find_element_by_id('username')我正在尝试输入用户名;但是，python说它找不到该元素，即使我正在使用它给你的用户名id。

Answer 1

我刚刚修改了你的代码，现在它的工作原理：

from selenium import webdriver

from selenium.webdriver.common.keys import Keys

from selenium.webdriver.support.ui import WebDriverWait

from selenium.webdriver.support import expected_conditions as EC

import time

chrome = webdriver.Chrome(executable_path= 'C:\webdriver.exe\chromedriver.exe',port=9515)

url = 'https://protonmail.com/'

chrome.get(url)

chrome.implicitly_wait(10)

chrome.find_element_by_xpath('//*[@class="btn btn-default btn-short"]').click()

chrome.find_element_by_class_name("panel-heading").click()

chrome.find_element_by_id("freePlan").click()

time.sleep(10)

#chrome.find_element_by_xpath('//*[contains(concat( " ", @class, " " ), concat( " ", "top", " " ))]')

chrome.switch_to.frame(chrome.find_element_by_xpath('//*[contains(concat( " ", @class, " " ), concat( " ", "top", " " ))]'))

typeinput = chrome.find_element_by_xpath('//*[@id="username"]')

typeinput.click()

typeinput.clear()

typeinput.send_keys('password')

chrome.switch_to.default_content()

chrome.find_element_by_id("password").send_keys('password')

chrome.find_element_by_id("passwordc").send_keys('password')

Answer 2

在AUT中模拟动作时，还有其他事情需要注意。即微调器和装载机。所以你也需要处理这些。

在你的代码中引入。据观察，在单击“注册”按钮时，它开始显示加载程序，然后显示计划，以便处理下面的代码使用，直到该加载程序被隐藏，然后执行单击所需的计划。ExplicitWait

chrome.find_element_by_xpath('//*[@class="btn btn-default btn-short"]').click()

WebDriverWait(chrome, 20).until(EC.invisibility_of_element_located((By.ID, "redir"))

chrome.find_element_by_css_selector("div[aria-controls='plan-free']").click()

在执行单击按钮时，它会重定向到新页面并显示新页面加载在那里，然后加载注册表单。使用下面的代码 -Free Plan

WebDriverWait(chrome, 10).until( EC.invisibility_of_element_located((By.ID, "pm_slow"))

注册表单中的用户名在 iframe 下加载，因此您需要先切换到 iframe，然后执行进一步的操作

username_frame = chrome.find_element_by_xpath("//div[@class='usernameWrap']//iframe[@title='Registration form']")

chrome.switch_to.frame(username_frame)

WebDriverWait(chrome, 10).until( EC.visibility_of_element_located((By.ID, "username"))

chrome.find_element_by_id('username').send_keys(‘username’)

chrome.switch_to.default_content()

chrome.find_element_by_id("password").send_keys('password')

chrome.find_element_by_id("passwordc").send_keys('password')