问题
I am getting various errors when I'm trying to run a python program using Selenium library and chromedriver. I follow the instructions on Selenium website to install all what I needed and then start programming my two first lines :
from selenium.webdriver import Chrome
driver = Chrome()
I got this error message :
WebDriverException Traceback (most recent call last)
<ipython-input-16-dce6fb94cc37> in <module>
1 from selenium.webdriver import Chrome
2
----> 3 driver = Chrome()
~/anaconda3/lib/python3.7/site-packages/selenium/webdriver/chrome/webdriver.py in __init__(self, executable_path, port, options, service_args, desired_capabilities, service_log_path, chrome_options, keep_alive)
79 remote_server_addr=self.service.service_url,
80 keep_alive=keep_alive),
---> 81 desired_capabilities=desired_capabilities)
82 except Exception:
83 self.quit()
~/anaconda3/lib/python3.7/site-packages/selenium/webdriver/remote/webdriver.py in __init__(self, command_executor, desired_capabilities, browser_profile, proxy, keep_alive, file_detector, options)
155 warnings.warn("Please use FirefoxOptions to set browser profile",
156 DeprecationWarning, stacklevel=2)
--> 157 self.start_session(capabilities, browser_profile)
158 self._switch_to = SwitchTo(self)
159 self._mobile = Mobile(self)
~/anaconda3/lib/python3.7/site-packages/selenium/webdriver/remote/webdriver.py in start_session(self, capabilities, browser_profile)
250 parameters = {"capabilities": w3c_caps,
251 "desiredCapabilities": capabilities}
--> 252 response = self.execute(Command.NEW_SESSION, parameters)
253 if 'sessionId' not in response:
254 response = response['value']
~/anaconda3/lib/python3.7/site-packages/selenium/webdriver/remote/webdriver.py in execute(self, driver_command, params)
319 response = self.command_executor.execute(driver_command, params)
320 if response:
--> 321 self.error_handler.check_response(response)
322 response['value'] = self._unwrap_value(
323 response.get('value', None))
~/anaconda3/lib/python3.7/site-packages/selenium/webdriver/remote/errorhandler.py in check_response(self, response)
240 alert_text = value['alert'].get('text')
241 raise exception_class(message, screen, stacktrace, alert_text)
--> 242 raise exception_class(message, screen, stacktrace)
243
244 def _value_or_default(self, obj, key, default):
WebDriverException: Message: unknown error: Chrome failed to start: crashed
(unknown error: DevToolsActivePort file doesn't exist)
(The process started from chrome location /usr/bin/chromium-browser is no longer running, so ChromeDriver is assuming that Chrome has crashed.)
so I read many messages and found advice from people who recommend to add options attributes before. So I change my code to this one:
from selenium.webdriver import Chrome
from selenium.webdriver.chrome.options import Options
chrome_options = Options()
chrome_options.add_argument('--no-sandbox')
chrome_options.add_argument('--headless')
chrome_options.add_argument('--disable-extensions')
driver = webdriver.Chrome(chrome_options=chrome_options)
driver.get('https://google.com')
But I still don't have any browser windows launch and I can't understand what is happening ... and my log tells this :
/home/lclis/anaconda3/lib/python3.7/site-packages/ipykernel_launcher.py:8: DeprecationWarning: use options instead of chrome_options
I'm looking for any advice or suggestion, I'm a little lost, thank you very much for your help and time to read my post !
PS: I'm on windows10 but using Ubuntu app to code and use Jupyter.
回答1:
If I am not mistaken, since you added the headless option, the browser won't open any window.
Try to remove this line: chrome_options.add_argument('--headless')
回答2:
This first error message...
WebDriverException Traceback (most recent call last)
<ipython-input-16-dce6fb94cc37> in <module>
1 from selenium.webdriver import Chrome
2
----> 3 driver = Chrome()
~/anaconda3/lib/python3.7/site-packages/selenium/webdriver/chrome/webdriver.py in __init__(self, executable_path, port, options, service_args, desired_capabilities, service_log_path, chrome_options, keep_alive)
79 remote_server_addr=self.service.service_url,
80 keep_alive=keep_alive),
---> 81 desired_capabilities=desired_capabilities)
82 except Exception:
83 self.quit()
...implies that the ChromeDriver was unable to initiate/spawn a new Browsing Context i.e. Chrome Browser session.
Ideally your code block should have worked out of box, but as you are using anaconda3 with ipython you need to pass the Key executable_path along with the Value set to the absolute path of the ChromeDriver as follows:
from selenium.webdriver import Chrome
driver = Chrome(executable_path='/path/to/chromedriver')
However, in your second code trial, you were pretty close. This second error message...
/home/lclis/anaconda3/lib/python3.7/site-packages/ipykernel_launcher.py:8: DeprecationWarning: use options instead of chrome_options
...implies that the ChromeDriver was again unable to initiate/spawn a new Browsing Context i.e. Chrome Browser session.
Instead of chrome_options you should have used options as follows:
from selenium import webdriver
from selenium.webdriver.chrome.options import Options
chrome_options = Options()
chrome_options.add_argument('--no-sandbox')
chrome_options.add_argument('--headless')
chrome_options.add_argument('--disable-extensions')
driver = webdriver.Chrome(options=chrome_options)
driver.get('https://google.com')
来源：https://stackoverflow.com/questions/59989038/why-chrome-browser-doesnt-launch-when-running-selenium-chrome-driver-on-ubuntu