selenium.common.exceptions.WebDriverException:消息:未知错误:无法通过Selenium使用ChromeDriver发现打开的页面

时间:2018-09-06 16:35:51

标签: python-3.x selenium selenium-webdriver webdriver selenium-chromedriver

enter image description here我是硒的新手,只是想学习。尝试通过ChromeDriver打开Chrome浏览器时出现以下错误:

Traceback (most recent call last):
  File "selenium_practise1_chrome.py", line 5, in <module>
    driver = webdriver.Chrome()
  File "C:\Users\kulokesh\AppData\Local\Programs\Python\Python36\lib\site-packages\selenium\webdriver\chrome\webdriver.py", line 75, in __init__
    desired_capabilities=desired_capabilities)
  File "C:\Users\kulokesh\AppData\Local\Programs\Python\Python36\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 156, in __init__
    self.start_session(capabilities, browser_profile)
  File "C:\Users\kulokesh\AppData\Local\Programs\Python\Python36\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 251, in start_session
    response = self.execute(Command.NEW_SESSION, parameters)
  File "C:\Users\kulokesh\AppData\Local\Programs\Python\Python36\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 320, in execute
    self.error_handler.check_response(response)
  File "C:\Users\kulokesh\AppData\Local\Programs\Python\Python36\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 242, in check_response
    raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.WebDriverException: Message: unknown error: unable to discover open pages
  (Driver info: chromedriver=2.40.565498 (ea082db3280dd6843ebfb08a625e3eb905c4f5ab),platform=a lotows NT 6.1.7601 SP1 x86_64)

尝试了很多谷歌搜索,但没有任何帮助。下面是我的代码:

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

driver = webdriver.Chrome()
driver.get('http://www.python.org')
print(driver.title)

这不是要处理的代码,但是我很困惑我在这里缺少什么。 另外,请提供一些不错的在线资源来学习Python Selenium。 我的Chrome打开后如下图所示:

1 个答案:

答案 0 :(得分:1)

此错误消息...

selenium.common.exceptions.WebDriverException: Message: unknown error: unable to discover open pages
  (Driver info: chromedriver=2.40.565498 (ea082db3280dd6843ebfb08a625e3eb905c4f5ab),platform=a lotows NT 6.1.7601 SP1 x86_64)

...表示 ChromeDriver 无法启动/产生新的 WebBrowser ,即 Chrome浏览器会话。

解决方案

通过ChromeOptions()将参数-no-sandbox 添加到您现有的代码中,如下所示:

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

options = Options()
options.add_argument('--no-sandbox') # Bypass OS security model
driver = webdriver.Chrome(chrome_options=options, executable_path=r'C:\path\to\chromedriver.exe')
driver.get('http://www.python.org')
print(driver.title)
driver.quit()

其他注意事项

  • 升级到当前水平Version 3.14.0
  • ChromeDriver 升级到当前的ChromeDriver v2.41级别。
  • Chrome 版本保持在 Chrome v66-68 级别之间。 (as per ChromeDriver v2.41 release notes
  • 通过您的 IDE
  • 清理您的项目工作区重建您的项目,并且仅具有必需的依赖项。
  • 执行您的@Test
  • 始终在driver.quit()方法内调用tearDown(){},以优雅地关闭和销毁 WebDriver Web Client 实例。