如何修复 NoSuchElementException（将 XPath 表达式与 Selenium 结合使用）

我正在尝试让 Selenium 导入元掩码。但是，当我使用 XPath 表达式时/html/body/div[1]/div/div[3]/div/div/div/button，我的控制台返回：

selenium.common.exceptions.NoSuchElementException：消息：没有这样的元素：无法定位元素：{“method”：“xpath”，“selector”：“/html/body/div1 https://developer.chrome.com/docs/devtools//div/div[3]/div/div/div/button"} （会话信息：chrome=93.0.4577.82）

Which is strange as when I use $x("/html/body/div[1]/div/div[3]/div/div/div/button") in Chrome DevTools https://developer.chrome.com/docs/devtools/, it is able to identify the Get Started button. How can I fix this error and why am I getting said error?

完整源代码：

from selenium import webdriver
from selenium.webdriver.chrome.options import Options
import time

options = Options()
options.add_extension('metamask-chrome-9.8.4.crx')

driver = webdriver.Chrome('./chromedriver', options = options)
driver.get('https://google.com')

time.sleep(2)

get_started_button = driver.find_element_by_xpath("/html/body/div[1]/div/div[3]/div/div/div/button")
get_started_button.click()

input('Press [ENTER] to close browsers...')

driver.quit()

完整错误日志：

Traceback (most recent call last):
  File "D:\Rias\metamask selenium\script.py", line 13, in <module>
    get_started_button = driver.find_element_by_xpath("/html/body/div[1]/div/div[3]/div/div/div/button")
  File "C:\Users\User\AppData\Local\Programs\Python\Python39\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 394, in find_element_by_xpath
    return self.find_element(by=By.XPATH, value=xpath)
  File "C:\Users\User\AppData\Local\Programs\Python\Python39\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 976, in find_element
    return self.execute(Command.FIND_ELEMENT, {
  File "C:\Users\User\AppData\Local\Programs\Python\Python39\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 321, in execute
    self.error_handler.check_response(response)
  File "C:\Users\User\AppData\Local\Programs\Python\Python39\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 242, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.NoSuchElementException: Message: no such element: Unable to locate element: {"method":"xpath","selector":"/html/body/div[1]/div/div[3]/div/div/div/button"}
  (Session info: chrome=93.0.4577.82)

Selenium 中有四种点击方式。

我将使用这个 XPath 表达式：

//button[text()='Get Started']

代码试用1：

time.sleep(5)
driver.find_element_by_xpath("//button[text()='Get Started']").click()

代码试用2：

WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//button[text()='Get Started']"))).click()

代码试用3：

time.sleep(5)
button = driver.find_element_by_xpath("//button[text()='Get Started']")
driver.execute_script("arguments[0].click();", button)

代码试用4：

time.sleep(5)
button = driver.find_element_by_xpath("//button[text()='Get Started']")
ActionChains(driver).move_to_element(button).click().perform()

Imports:

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

PS:请检查开发工具中是否有 HTML 中的唯一条目DOM https://en.wikipedia.org/wiki/Document_Object_Model or not.

检查步骤：

Press F12 in Chrome → go to element section → do a Ctrl + F → then paste the XPath expression and see, if your desired element is getting highlighted.