python - OSError: [WinError 6] 通过 Python 使用 Selenium 的错误描述符错误

Question

你能帮我写代码吗？我想解析电话号码，但我需要点击激活按钮。但是这个按钮带有标签，这对我来说是个问题。我该如何解决？

from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from selenium.webdriver.common.action_chains import ActionChains
#from selenium.webdriver.common.touch_actions import TouchActions
#import org.openqa.selenium.interactions.Actions


#TouchActions.tap
def main():
    driver = webdriver.Chrome()
    remote = driver.get("https://www.olx.ua/uk/obyavlenie/68200jk71a-torpedo-pod-airbag-infiniti-g-07-14-infiniti-IDGRpUS.html#d97e6d976d;promoted")
    bt_elem = driver.find_elements_by_id("postNewAdLink")
    #print(bt_elem[0])
    #driver.find_elements_by_class_name("contact-button").click()
    #ActionChains(driver).move_to_element(bt_elem).perform().click()

    #bt_elem.get(0).click()
    #TouchActions.tap(bt_elem)

main()

错误：

Traceback (most recent call last):
  File "C:\Users\radus\AppData\Local\Programs\Python\Python38\lib\subprocess.py", line 945, in __del__
    self._internal_poll(_deadstate=_maxsize)
  File "C:\Users\radus\AppData\Local\Programs\Python\Python38\lib\subprocess.py", line 1344, in _internal_poll
    if _WaitForSingleObject(self._handle, 0) == _WAIT_OBJECT_0:
OSError: [WinError 6] Wrong descriptor

Answer 1

此错误消息...

  File "C:\Users\radus\AppData\Local\Programs\Python\Python38\lib\subprocess.py", line 945, in __del__
    self._internal_poll(_deadstate=_maxsize)
  File "C:\Users\radus\AppData\Local\Programs\Python\Python38\lib\subprocess.py", line 1344, in _internal_poll
    if _WaitForSingleObject(self._handle, 0) == _WAIT_OBJECT_0:
OSError: [WinError 6] Wrong descriptor

...表示该subprocess.Popen()命令有错误。

---

根据Selenium 3.5.0-GeckoDriver 0.18.0-Python 3.6.1 中的讨论：通过 Python PyDev (Eclipse) unittest 模块调用 close() 时观察到“OSError: [WinError 6] The handle is invalid”这个问题即使在self.driver.close()通过Python 的 unittest模块调用时也可以观察到。

This is because there is no stdin defined in the `service.py` file for the `subprocess.Popen()` command. Underwater the subprocess tries to create a handle which also looks for stdin under Windows this gets a bit tricky when using `Bash` or `cx_Freeze`. So, `stdin` was defined as well, and the crash is gone. Optionally you can also use:

FNULL = open(os.devnull, 'r')
subprocess.Popen(.... ,stdin=FNULL)

---

解决方案

该解决方案是从 Also define stdin 中合并的，否则它将在 Python + cx_Freeze: WindowsErro…</a> 拉取请求上崩溃，并且在Selenium v3.8.1

理想情况下，您需要确保：

• Selenium升级到当前级别版本 3.141.59。
• ChromeDriver已更新到当前的ChromeDriver v80.0级别。
• Chrome已更新到当前的Chrome 版本 80.0级别。（根据ChromeDriver v80.0 发行说明）
• 通过IDE清理项目工作区并仅使用所需的依赖项重建项目。
• 始终driver.quit()在tearDown(){}方法内调用以优雅地关闭和销毁WebDriver和Web 客户端实例。

---

tl; 博士

subprocess.Popen._cleanup() 某些旧进程消失时出现“句柄无效”错误

Answer 2

您的代码看起来不错...您的环境看起来很可疑。如果我冒险猜测（因为它是子进程模块在抱怨），也许 Selenium 在你的 PATH 中找不到 chrome.exe。Chrome 会在此异常之前打开吗？