问题
If any Chrome processes are running and the following code is run, Stack Overflow will NEVER load:
options = webdriver.ChromeOptions()
options.add_argument("user-data-dir=C:\\Users\\RvBVakama\\AppData\\Local\\Google\\Chrome\\User Data")
options.add_argument('--profile-directory=Profile 1')
w = webdriver.Chrome('C:/Program Files (x86)/Google/Chrome/Application/chromedriver.exe', options=options)
w.get("https://stackoverflow.com/")
If any Chrome processes exist and the following code is run, it will load Stack Overflow after a few moments:
w = webdriver.Chrome('C:/Program Files (x86)/Google/Chrome/Application/chromedriver.exe')
w.get("https://stackoverflow.com/")
The only difference is that the first code block launches Chrome with profile 1.
Here is the error log from block one:
[13768:7324:1216/205746.092:ERROR:cache_util_win.cc(19)] Unable to move the cache: 0
[13768:7324:1216/205746.093:ERROR:cache_util.cc(140)] Unable to move cache folder C:\Users\RvBVakama\AppData\Local\Google\Chrome\User Data\ShaderCache\GPUCache to C:\Users\RvBVakama\AppData\Local\Google\Chrome\User Data\ShaderCache\old_GPUCache_000
[13768:7324:1216/205746.094:ERROR:disk_cache.cc(184)] Unable to create cache
[13768:7324:1216/205746.095:ERROR:shader_disk_cache.cc(622)] Shader Cache Creation failed: -2
Traceback (most recent call last):
File "c:\Users\RvBVakama\.vscode\extensions\ms-python.python-2018.12.1\pythonFiles\ptvsd_launcher.py", line 45, in <module>
main(ptvsdArgs)
File "c:\Users\RvBVakama\.vscode\extensions\ms-python.python-2018.12.1\pythonFiles\lib\python\ptvsd\__main__.py", line 265, in main
wait=args.wait)
File "c:\Users\RvBVakama\.vscode\extensions\ms-python.python-2018.12.1\pythonFiles\lib\python\ptvsd\__main__.py", line 256, in handle_args
run_main(addr, name, kind, *extra, **kwargs)
File "c:\Users\RvBVakama\.vscode\extensions\ms-python.python-2018.12.1\pythonFiles\lib\python\ptvsd\_local.py", line 52, in run_main
runner(addr, name, kind == 'module', *extra, **kwargs)
File "c:\Users\RvBVakama\.vscode\extensions\ms-python.python-2018.12.1\pythonFiles\lib\python\ptvsd\runner.py", line 32, in run
set_trace=False)
File "c:\Users\RvBVakama\.vscode\extensions\ms-python.python-2018.12.1\pythonFiles\lib\python\ptvsd\_vendored\pydevd\pydevd.py", line 1283, in run
return self._exec(is_module, entry_point_fn, module_name, file, globals, locals)
File "c:\Users\RvBVakama\.vscode\extensions\ms-python.python-2018.12.1\pythonFiles\lib\python\ptvsd\_vendored\pydevd\pydevd.py", line 1290, in _exec
pydev_imports.execfile(file, globals, locals) # execute the script
File "c:\Users\RvBVakama\.vscode\extensions\ms-python.python-2018.12.1\pythonFiles\lib\python\ptvsd\_vendored\pydevd\_pydev_imps\_pydev_execfile.py", line 25, in execfile
exec(compile(contents+"\n", file, 'exec'), glob, loc)
File "c:\Users\RvBVakama\Desktop\tet.py", line 9, in <module>
w = webdriver.Chrome('C:/Program Files (x86)/Google/Chrome/Application/chromedriver.exe', options=options)
File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python36_64\lib\site-packages\selenium\webdriver\chrome\webdriver.py", line 81, in __init__
desired_capabilities=desired_capabilities)
File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python36_64\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 157, in __init__
self.start_session(capabilities, browser_profile)
File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python36_64\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 252, in start_session
response = self.execute(Command.NEW_SESSION, parameters)
File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python36_64\lib\site-packages\selenium\webdriver\remote\webdriver.py", line 321, in execute
self.error_handler.check_response(response)
File "C:\Program Files (x86)\Microsoft Visual Studio\Shared\Python36_64\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: Chrome failed to start: crashed
(unknown error: DevToolsActivePort file doesn't exist)
(The process started from chrome location C:\Program Files (x86)\Google\Chrome\Application\chrome.exe is no longer running, so ChromeDriver is assuming that Chrome has crashed.)
(Driver info: chromedriver=2.45.615291 (ec3682e3c9061c10f26ea9e5cdcf3c53f3f74387),platform=Windows NT 6.1.7601 SP1 x86_64)
Notice the last line.
I am unsure as to why chromedriver assumes Chrome has crashed.
回答1:
I'm not sure it is the same user-data-dir, but a different profile will lead to conflicts. I always use another user-data-dir with scripts.
-- But seeing your case I guess it is so.
Also BTW, to make life easier, why not just copy to some shorter directory address? --- say "C:\ChromeUserData".
And if you don't care about the old settings, you just specify user-data-dir to a new location. And Chrome will create the profile and things for you. (The directory specified needs to exist.)
For example:
options = webdriver.ChromeOptions()
options.add_argument("--user-data-dir=D:\\chromedriver\\UserDataDir") #Path to your chrome user-data/profile
options.add_argument('--disable-infobars') #disable the automation prompt bar
options.add_argument('--lang=en') #Set language to English
w = webdriver.Chrome(executable_path="D:\\chromedriver\\chromedriver.exe", chrome_options=options)
Given that D:\chromedriver\UserDataDir exists (or you create it first) and chromedriver.exe is at D:\chromedriver\chromedriver.exe.
By this way, you don't need to specify profile-directory any more. The script will create and use Default directory/profile inside D:\\chromedriver\\UserDataDir and save any changes you made.
Another tip: You can put chromedriver.exe in the directory of python.exe, thus to save the needs to specify executable_path, also will have fewer possible errors.
To make it more reliable, you can put these before above code snippets:
import os
uddPath = 'D:\\chromedriver\\UserDataDir'
if not os.path.exists(uddPath):
os.makedirs(uddPath)
回答2:
Okay so the fix is to go to C:\Users\NAME\AppData\Local\Google\Chrome and duplicate your "User Data" folder and give it another name. Then just set your "user-data-dir" argument to the new folder.
# set up the chrome options to launch with the AUTO profile
options = webdriver.ChromeOptions()
options.add_argument("user-data-dir=C:\\Users\\RvBVakama\\AppData\\Local\\Google\\Chrome\\User Data AUTO")
options.add_argument('--profile-directory=Profile 1')
# start chrome with the driver
w = webdriver.Chrome('C:/Program Files (x86)/Google/Chrome/Application/chromedriver.exe', options=options)
来源：https://stackoverflow.com/questions/53801158/chromedriver-is-assuming-that-chrome-has-crashed-when-passing-profile-arguments