I'm trying to get back some performance log info from a remote webdriver instance. I'm using the Python Selenium bindings.

From what I can see, this is information I should be able to get back. Think it may only be available with ChromeDriver. I'm currently using FireFox but can easily switch over if it gets the info I want.

However, I'm new to Python (but learning!) and documentation around the capabilities dictionaries (when used for performance logging) for Python seems to be a bit limited (or my google-fu is weak this morning).

I've found the following:

DesiredCapabilities caps = DesiredCapabilities.chrome();
LoggingPreferences logPrefs = new LoggingPreferences();
logPrefs.enable("performance", Level.INFO);
caps.setCapability(CapabilityType.LOGGING_PREFS, logPrefs);
driver = new RemoteWebDriver("http://localhost:9515", caps);

Which looks like it should do what I need. But it's Java. I'm not quite sure how I'd go about converting this to Python. Assuming it's possible.

Any ideas?

In case anyone is wondering, this seems to do the trick for me:

(Assuming you're using selenium remote)

url = 'http://remote instance IP:PORT/wd/hub'
descaps = {'browserName': 'chrome', 'loggingPrefs': {'performance': 'INFO'}}driver = webdriver.Remote(command_executor=url, desired_capabilities=descaps)driver.command_executor._commands.update({'getAvailableLogTypes': ('GET', '/session/sessionId/log/types'), {'getLog': ('POST', '/session/$sessionId/log')})getlog = driver.execute('getLog', {'type': 'performance'})['value']

(Of the two added commands 'getAvailableLogTypes' and 'getLog' - you only see the former in the above code snippet. The latter simply returns a list of the available log types on your remote session.)

Now all I need to do is interpret it ....