Solving problem is about exposing yourself to as many situations as possible like Selenium using Python – Geckodriver executable needs to be in PATH and practice these strategies over and over. With time, it becomes second nature and a natural way you approach any problems in general. Big or small, always start with a plan, use other strategies mentioned here till you are confident and ready to code the solution.
In this post, my aim is to share an overview the topic about Selenium using Python – Geckodriver executable needs to be in PATH, which can be followed any time. Take easy to follow this discuss.
I’m new to programming and started with Python about two months ago and am going over Sweigart’s Automate the Boring Stuff with Python text. I’m using IDLE and already installed the Selenium module and the Firefox browser.
Whenever I tried to run the webdriver function, I get this:
from selenium import webdriver browser = webdriver.Firefox()
Exception ignored in: <bound method Service.__del__ of <selenium.webdriver.firefox.service.Service object at 0x00000249C0DA1080>> Traceback (most recent call last): File "C:PythonPython35libsite-packagesseleniumwebdrivercommonservice.py", line 163, in __del__ self.stop() File "C:PythonPython35libsite-packagesseleniumwebdrivercommonservice.py", line 135, in stop if self.process is None: AttributeError: 'Service' object has no attribute 'process' Exception ignored in: <bound method Service.__del__ of <selenium.webdriver.firefox.service.Service object at 0x00000249C0E08128>> Traceback (most recent call last): File "C:PythonPython35libsite-packagesseleniumwebdrivercommonservice.py", line 163, in __del__ self.stop() File "C:PythonPython35libsite-packagesseleniumwebdrivercommonservice.py", line 135, in stop if self.process is None: AttributeError: 'Service' object has no attribute 'process' Traceback (most recent call last): File "C:PythonPython35libsite-packagesseleniumwebdrivercommonservice.py", line 64, in start stdout=self.log_file, stderr=self.log_file) File "C:PythonPython35libsubprocess.py", line 947, in __init__ restore_signals, start_new_session) File "C:PythonPython35libsubprocess.py", line 1224, in _execute_child startupinfo) FileNotFoundError: [WinError 2] The system cannot find the file specified During handling of the above exception, another exception occurred: Traceback (most recent call last): File "<pyshell#11>", line 1, in <module> browser = webdriver.Firefox() File "C:PythonPython35libsite-packagesseleniumwebdriverfirefoxwebdriver.py", line 135, in __init__ self.service.start() File "C:PythonPython35libsite-packagesseleniumwebdrivercommonservice.py", line 71, in start os.path.basename(self.path), self.start_error_message) selenium.common.exceptions.WebDriverException: Message: 'geckodriver' executable needs to be in PATH.
I think I need to set the path for
geckodriver, but I am not sure how, so how would I do this?
selenium.common.exceptions.WebDriverException: Message: ‘geckodriver’ executable needs to be in PATH.
Actually, the Selenium client bindings tries to locate the
geckodriver executable from the system
PATH. You will need to add the directory containing the executable to the system path.
On Unix systems you can do the following to append it to your system’s search path, if you’re using a Bash-compatible shell:
On Windows you will need to update the Path system variable to add the full directory path to the executable geckodriver manually or command line** (don’t forget to restart your system after adding executable geckodriver into system PATH to take effect)**. The principle is the same as on Unix.
Now you can run your code same as you’re doing as below :-
from selenium import webdriver browser = webdriver.Firefox()
selenium.common.exceptions.WebDriverException: Message: Expected browser binary location, but unable to find binary in default location, no ‘moz:firefoxOptions.binary’ capability provided, and no binary flag set on the command line
The exception clearly states you have installed Firefox some other location while Selenium is trying to find Firefox and launch from the default location, but it couldn’t find it. You need to provide explicitly Firefox installed binary location to launch Firefox as below :-
from selenium import webdriver from selenium.webdriver.firefox.firefox_binary import FirefoxBinary binary = FirefoxBinary('path/to/installed firefox binary') browser = webdriver.Firefox(firefox_binary=binary)
Download the file from GitHub, extract it, and paste it in Python file. It worked for me.
For me, my path path is:
This solved it for me.
from selenium import webdriver driver = webdriver.Firefox(executable_path=r'yourpathgeckodriver.exe') driver.get('http://inventwithpython.com')
This steps solved it for me on Ubuntu and Firefox 50.
Copy geckodriver to folder
You do not need to add:
firefox_capabilities = DesiredCapabilities.FIREFOX firefox_capabilities['marionette'] = True firefox_capabilities['binary'] = '/usr/bin/firefox' browser = webdriver.Firefox(capabilities=firefox_capabilities)
The answer by @saurabh solves the issue, but it doesn’t explain why Automate the Boring Stuff with Python doesn’t include those steps.
This is caused by the book being based on Selenium 2.x and the Firefox driver for that series does not need the Gecko driver. The Gecko interface to drive the browser was not available when Selenium was being developed.
The latest version in the Selenium 2.x series is 2.53.6 (see e.g. [these answers], for an easier view of the versions).
The [2.53.6 version page] doesn’t mention Gecko at all. But since version 3.0.2 the documentation [explicitly states] you need to install the Gecko driver.
If after an upgrade (or install on a new system), your software that worked fine before (or on your old system) doesn’t work anymore and you are in a hurry, pin the Selenium version in your virtualenv by doing
pip install selenium==2.53.6
but of course the long term solution for development is to setup a new virtualenv with the latest version of selenium, install the Gecko driver and test if everything still works as expected.
But the major version bump might introduce other API changes that are not covered by your book, so you might want to stick with the older Selenium, until you are confident enough that you can fix any discrepancies between the Selenium 2 and Selenium 3 API yourself.
On macOS with Homebrew already installed you can simply run the Terminal command
$ brew install geckodriver
Because homebrew already did extend the
PATH there’s no need to modify any startup scripts.
To set up geckodriver for Selenium Python:
It needs to set the geckodriver path with FirefoxDriver as the below code:
self.driver = webdriver.Firefox(executable_path = 'D:Selenium_RiponAlWasimgeckodriver-v0.18.0-win64geckodriver.exe')
Download geckodriver for your suitable OS (from https://github.com/mozilla/geckodriver/releases) ? Extract it in a folder of your choice ? Set the path correctly as mentioned above.
I’m using Python 3.6.2 and Selenium WebDriver 3.4.3 on Windows 10.
Another way to set up geckodriver:
i) Simply paste the geckodriver.exe under /Python/Scripts/ (in my case the folder was:
ii) Now write the simple code as below:
self.driver = webdriver.Firefox()
conda install -c conda-forge geckodriver
I see the discussions still talk about the old way of setting up geckodriver by downloading the binary and configuring the path manually.
This can be done automatically using webdriver-manager
pip install webdriver-manager
Now the above code in the question will work simply with the below change,
from selenium import webdriver from webdriver_manager.firefox import GeckoDriverManager driver = webdriver.Firefox(executable_path=GeckoDriverManager().install())