问题
There seems to be a problem with my implementation but I'm not sure what the problem might be. It would be really helpful if I could check the log files (as mentioned in the exception):
WebDriverException: Message: The browser appears to have exited before we could connect. If you specified a log_file in the FirefoxBinary constructor, check it for details.
but the process doesn't write anything to the file I designate as the log file.
from selenium import webdriver
from selenium.webdriver import FirefoxProfile, FirefoxOptions
log_file_handle = open('/home/plonca/selenium_draft/log_firefox_3.txt', 'w')
firefox_binary = webdriver.firefox.firefox_binary.FirefoxBinary(firefox_path='/mnt/c/Program Files/Mozilla Firefox/firefox.exe', log_file=log_file_handle)
f_profile = FirefoxProfile('/home/plonca/selenium_draft/firefox_profiles')
options = FirefoxOptions()
options.profile = f_profile
options.log.level = 'trace'
firefox_driver = webdriver.Firefox(executable_path='/home/plonca/python_virtual_environments/selenium_jupyter_venv/bin/geckodriver.exe', firefox_binary=firefox_binary, options=options)
The full error stack:
---------------------------------------------------------------------------
WebDriverException Traceback (most recent call last)
<ipython-input-79-b8c3f0371d0b> in <module>
1 firefox_driver = webdriver.Firefox(executable_path='/home/plonca/python_virtual_environments/selenium_jupyter_venv/bin/geckodriver.exe',
2 firefox_binary=firefox_binary,
----> 3 options=options)
~/python_virtual_environments/selenium_jupyter_venv/lib/python3.6/site-packages/selenium/webdriver/firefox/webdriver.py in __init__(self, firefox_profile, firefox_binary, timeout, capabilities, proxy, executable_path, options, service_log_path, firefox_options, service_args, desired_capabilities, log_path, keep_alive)
189
190 executor = ExtensionConnection("127.0.0.1", self.profile,
--> 191 self.binary, timeout)
192 RemoteWebDriver.__init__(
193 self,
~/python_virtual_environments/selenium_jupyter_venv/lib/python3.6/site-packages/selenium/webdriver/firefox/extension_connection.py in __init__(self, host, firefox_profile, firefox_binary, timeout)
50 self.profile.add_extension()
51
---> 52 self.binary.launch_browser(self.profile, timeout=timeout)
53 _URL = "http://%s:%d/hub" % (HOST, PORT)
54 RemoteConnection.__init__(
~/python_virtual_environments/selenium_jupyter_venv/lib/python3.6/site-packages/selenium/webdriver/firefox/firefox_binary.py in launch_browser(self, profile, timeout)
71
72 self._start_from_profile_path(self.profile.path)
---> 73 self._wait_until_connectable(timeout=timeout)
74
75 def kill(self):
~/python_virtual_environments/selenium_jupyter_venv/lib/python3.6/site-packages/selenium/webdriver/firefox/firefox_binary.py in _wait_until_connectable(self, timeout)
102 # Browser has exited
103 raise WebDriverException(
--> 104 "The browser appears to have exited "
105 "before we could connect. If you specified a log_file in "
106 "the FirefoxBinary constructor, check it for details.")
WebDriverException: Message: The browser appears to have exited before we could connect. If you specified a log_file in the FirefoxBinary constructor, check it for details.
How to enable writing logs to /home/plonca/selenium_draft/log_firefox_3.txt? I'm using WSL: the code is run on Ubuntu 18.04 and the Firefox browser is installed on the host Windows.
- selenium: 3.141.0
- Firefox: 82.0.2
- geckodriver: 0.27.0
来源：https://stackoverflow.com/questions/64662243/python-selenium-enable-logging-with-firefox-webdriver