OSError：[WinError 6]通过Python使用Selenium错误的描述符错误

Question

您能帮我提供我的代码吗？我想解析电话号码，但是我需要点击激活按钮。但这按钮带有标签，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

您的代码看起来不错...您的环境看起来很可疑。如果要冒一个危险（因为这是子进程模块的抱怨），则Selenium可能无法在PATH中找到chrome.exe。 Chrome会在此例外之前打开吗？

Answer 2

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subprocess.Popen()命令存在错误。

---

根据Selenium 3.5.0-GeckoDriver 0.18.0-Python 3.6.1 : "OSError: [WinError 6] The handle is invalid" is observed while close() is called through Python PyDev (Eclipse) unittest module中的讨论，即使通过Python's self.driver.close()模块调用unittest，也观察到了此问题。

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 or it will crash on Python + cx_Freeze: WindowsErro…拉取请求合并而来的，在Selenium v3.8.1中可用

理想情况下，您需要确保：

• Selenium已升级到当前级别Version 3.141.59。
• ChromeDriver已更新为当前ChromeDriver v80.0级别。
• Chrome已更新为当前的Chrome版本80.0级别。 （根据ChromeDriver v80.0 release notes）
• Clean您的Project Workspace通过您的IDE和Rebuild您的项目仅具有必需的依赖项。
• 总是在driver.quit()方法中调用tearDown(){}以正常关闭并销毁WebDriver和Web Client实例。

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tl;医生

subprocess.Popen._cleanup() "The handle is invalid" error when some old process is gone