今天在跑一个之前写的Python程序时报错：

F:\workplace\5iDHL>getwaybills.py

[13044:10988:1221/171916.634:ERROR:policy_loader_win.cc(505)] PReg file doesn't exist: C:\WINDOWS\System32\GroupPolicy\User\Registry.pol

DevTools listening on ws://127.0.0.1:12084/devtools/browser/3553e8bc-6f51-465a-9bf5-1c7ae3048a2f

Traceback (most recent call last):

 File "F:\workplace\5iDHL\getWaybills.py", line 12, in <module>

   driver.get(loginUrl);

 File "C:\Users\sunnybirds\AppData\Local\Programs\Python\Python36-32\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 323, in get

   self.execute(Command.GET, {'url': url})

 File "C:\Users\sunnybirds\AppData\Local\Programs\Python\Python36-32\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 311, in execute

   self.error_handler.check_response(response)

 File "C:\Users\sunnybirds\AppData\Local\Programs\Python\Python36-32\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 237, in check_response

   raise exception_class(message, screen, stacktrace)

selenium.common.exceptions.WebDriverException: Message: unknown error: missing or invalid 'entry.level'

 (Session info: chrome=63.0.3239.84)

 (Driver info: chromedriver=2.27.440174 (e97a722caafc2d3a8b807ee115bfb307f7d2cfd9),platform=Windows NT 10.0.16299 x86_64)

错误说C:\WINDOWS\System32\GroupPolicy\User\Registry.pol的这个文件不存在了，难道是模块损坏了？于是卸载重装selenium模块，没有解决问题。

看来这锅得摔给windows 10了，既然模块没有问题，那就是系统的问题了（不然怎么会爆出系统盘的系统文件少了，肯定是系统更新的时候删了）。

于是把C:\Windows\System32\GroupPolicy\Machine下的Registry.pol复制到C:\WINDOWS\System32\GroupPolicy\User\，问题解决。

然而还是不能运行，出了一个新问题：

F:\workplace\5iDHL>getwaybills.py

DevTools listening on ws://127.0.0.1:12075/devtools/browser/53a8dc11-90b6-47e1-be1f-9e96ee0fc7f6

Traceback (most recent call last):

 File "F:\workplace\5iDHL\getWaybills.py", line 12, in <module>

   driver.get(loginUrl);

 File "C:\Users\sunnybirds\AppData\Local\Programs\Python\Python36-32\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 323, in get

   self.execute(Command.GET, {'url': url})

 File "C:\Users\sunnybirds\AppData\Local\Programs\Python\Python36-32\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 311, in execute

   self.error_handler.check_response(response)

 File "C:\Users\sunnybirds\AppData\Local\Programs\Python\Python36-32\lib\site-packages\selenium\webdriver\remote\errorhandler.py", line 237, in check_response

   raise exception_class(message, screen, stacktrace)

selenium.common.exceptions.WebDriverException: Message: unknown error: missing or invalid 'entry.level'

 (Session info: chrome=63.0.3239.84)

 (Driver info: chromedriver=2.27.440174 (e97a722caafc2d3a8b807ee115bfb307f7d2cfd9),platform=Windows NT 10.0.16299 x86_64)

问题出在chrome与chromedriver版本号不匹配，将chromedriver升级即可解决问题