Selenium Python Windows "cannot connect to the service" - python

I've trawled the web and SO for a good few hours and have exhausted all solutions I can find. Windows 10 / Chrome 87.0 / Python 3.
from selenium import webdriver
DRIVER_PATH = r'./chromedriver/chromedriver.exe'
driver = webdriver.Chrome(executable_path=DRIVER_PATH)
returns:
WebDriverException: Message: Can not connect to the Service ./chromedriver/chromedriver.exe
I have made sure that the chromedriver is added to path
I have added 127.0.0.1 localhost to a clean hosts file in %windir%\System32\drivers\etc
I have tried specifying the driver path explicitly and implicitly

You need to insert the entire path, on windows its like this:
executable_path=r'C:\Utility\BrowserDrivers\chromedriver.exe'

This os path...
r'./chromedriver/chromedriver.exe'
...refers to the ChromeDriver executable within the chromedriver sub-directory which is located in the same directory from where your program executes.
By all possible means r'./chromedriver/chromedriver.exe' is not the actual location of the ChromeDriver executable within your system. Hence you see the error.
Solution
Pass the absolute path of the ChromeDriver as follows:
from selenium import webdriver
DRIVER_PATH = r'C:\..\..\chromedriver\chromedriver.exe'
driver = webdriver.Chrome(executable_path=DRIVER_PATH)
References
You can find a couple of relevant detailed discussions in:
selenium.common.exceptions.WebDriverException: Message: Can not connect to the Service chromedriver.exe while opening chrome browser
selenium.common.exceptions.WebDriverException: Message: Can not connect to the Service error using ChromeDriver Chrome through Selenium Python
Python Selenium “Can not connect to the Service %s” % self.path in linux server

Related

Cannot connect to the service chromedriver (Mac) [duplicate]

So I have made a program on one computer using selenium and that worked, Now using it in another computer I get this error:
selenium.common.exceptions.WebDriverException: Message: Can not connect to the Service chromedriver
Now this same issue was mention in:
Selenium python: Can not connect to the Service %s" % self.path
Selenium python: Can not connect to the Service %s" % self.path
Selenium and Python3 ChromeDriver raises Message: Can not connect to the Service chromedriver
however the solutions mentioned didnt work.
I am using chrome version 79 and have installed chromedriver 79, I tested writing chromedriver in command line and that works which means path is configured right, I have made sure 127.0.0.1 localhost is also in etc/hosts
Below is my code which works on my computer (so i doubt its an issue with the code):
chrome_options = Options()
chrome_options.add_argument("--headless")
with webdriver.Chrome(chrome_options=chrome_options) as driver:
driver.set_window_size(800, 460) # takes two arguments, width and height of the browser and it has to be called before using get()
driver.execute_script("document.body.style.zoom='150%'")
driver.get("file:\\"+url) # takes one argument, which is the url of the website you want to open
driver.find_element_by_tag_name('body').screenshot(output) # avoids scrollbar
In the last question I also tried this modification:
chrome_options = Options()
chrome_options.add_argument("--headless")
with webdriver.Chrome("C:\\chromedriver.exe",chrome_options=chrome_options) as driver:
driver.set_window_size(800, 460) # takes two arguments, width and height of the browser and it has to be called before using get()
driver.execute_script("document.body.style.zoom='150%'")
driver.get("file:\\"+url) # takes one argument, which is the url of the website you want to open
driver.find_element_by_tag_name('body').screenshot(output) # avoids scrollbar
which would instead give me this almost identical error message:
selenium.common.exceptions.WebDriverException: Message: Can not connect to the Service C:\chromedriver.exe
I am unsure where the issue could lie.
I am using windows by the way.
EDIT: Things I tried and didn't work:
1- running everything as both admin and normal
2- re-installing chrome
3- using the beta-chroma 80 and webdriver 80
4- using normal chrome 79 and webdriver 79
5- Having both the script and the driver in the same directory (while using a
correct path)
6- Having an external path and have it setup as needed
7- Using it in the PATH folder.
8- Adding "127.0.0.1 localhost" to etc/hosts
9- Running service test
I have ensured in every test that everything was in it's correct placement, I have ran a reboot before every new test, and they always give me the same error, which also happens to occur if I had an incorrect path as well, but once I ran the code for a service and it gave me a different error as I had my webdriver in C:/ which required admin privilages, however re-running the test again with the correct privilages gave back the same error
Update the issue isn't exclusive to the chrome driver. Even following setup instructions for either the Firefox or edge drivers end up on the same issues. It makes me suspect that the connection is facing some issue. I have tried running the test codes provided by Mozilla for the setup and it didn't work.
Unsure if that does help much or at all.
This error message...
selenium.common.exceptions.WebDriverException: Message: Can not connect to the Service chromedriver
...implies that the ChromeDriver was unable to initiate/spawn a new Browsing Context i.e. Chrome Browser session.
You need to take care of a couple of things:
Ensure that you have downloaded the exact format of the ChromeDriver binary from the download location pertaining to your underlying OS among:
chromedriver_linux64.zip: For Linux OS
chromedriver_mac64.zip: For Mac OSX
chromedriver_win32.zip: For Windows OS
Ensure that /etc/hosts file contains the following entry:
127.0.0.1 localhost
Ensure that ChromeDriver binary have executable permission for the non-root user.
Ensure that you have passed the proper absolute path of ChromeDriver binary through the argument executable_path as follows:
with webdriver.Chrome(executable_path=r'C:\path\to\chromedriver.exe', chrome_options=chrome_options) as driver:
So your effective code block will be:
options = Options()
options.add_argument("--headless")
options.add_argument('--no-sandbox') # Bypass OS security model
options.add_argument('--disable-gpu') # applicable to windows os only
options.add_argument("--disable-dev-shm-usage") # overcome limited resource problems
options.add_experimental_option("excludeSwitches", ["enable-automation"])
options.add_experimental_option('useAutomationExtension', False)
with webdriver.Chrome(executable_path=r'C:\path\to\chromedriver.exe', options=options) as driver:
driver.set_window_size(800, 460) # takes two arguments, width and height of the browser and it has to be called before
driver.execute_script("document.body.style.zoom='150%'")
driver.get("file:\\"+url) # takes one argument, which is the url of the website you want to open
driver.find_element_by_tag_name('body').screenshot(output) # avoids scrollbar
Mandatory Considerations
Finally, to avoid incompatibility between the version of the binaries you are using ensure that:
Selenium is upgraded to current levels Version 3.141.59.
ChromeDriver is updated to current ChromeDriver v79.0.3945.36 level.
Chrome is updated to current Chrome Version 79.0 level. (as per ChromeDriver v79.0 release notes)
Clean your Project Workspace through your IDE and Rebuild your project with required dependencies only.
If your base Web Client version is too old, then uninstall it and install a recent GA and released version of Web Client.
Take a System Reboot.
Execute your #Test as non-root user.
References
You can find a couple of reference discussions in:
Python Selenium “Can not connect to the Service %s” % self.path in linux server
selenium.common.exceptions.WebDriverException: Message: Can not connect to the Service chromedriver.exe while opening chrome browser
How to configure ChromeDriver to initiate Chrome browser in Headless mode through Selenium?

Python / Selenium - "chromedriver" executable needs to be in a PATH

I was trying to do something with a gecko driver ( Selenium in this case ) and I can't get my chrome driver to work. Knowing that I am on Mac Sierra, and that my script is in the same folder as my chrome driver, here is my code
from selenium import webdriver
import time
url = "https://accounts.google.com/signup/v2/webcreateaccount?flowName=GlifWebSignIn&flowEntry=SignUp"
driver = webdriver.Chrome("chromedriver")
driver.get(url)
Thanks for the help
You can test if it actually is in the PATH, Open your command prompt go to the location of your chromedriver and hit enter. you will get below message:
C:\>
chromedriver.exe
Starting ChromeDriver 76.0.3809.68 (420c9498db8ce8fcd190a954d51297672c1515d5-ref
s/branch-heads/3809#{#864}) on port 9515
Only local connections are allowed.
Please protect ports used by ChromeDriver and related test frameworks to prevent
access by malicious code.
Then you need to setup PATH like below before you start your test:
driver = webdriver.Chrome('/path/to/chromedriver')
Try this:
from selenium import webdriver
driver= webdriver.Chrome(executable_path="C:/users/usr/Desktop/chromedriver.exe")
url = 'your website'
driver.get(url)
make sure you are using this slash (/) in your file path to the chrome driver (as shown above)

Running Selenium file in Amazon AWS

I am running Selenium file on Amazon AWS Ubuntu Server, but I am getting the following error on the below line:
driver = webdriver.Chrome();
The error says:
selenium.common.exceptions.WebDriverException: Message: Service chromedriver unexpectedly exited. Status code was: 127
I have tried many solutions but it is still not working (How to fix Selenium WebDriverException: The browser appears to have exited before we could connect?)
I have also tried with:
driver = webdriver.Firefox();
and in Firefox, I am getting the following error:
selenium.common.exceptions.WebDriverException: Message: connection refused
Can anyone help me?
Since its Amazon AWS please check if Chrome is installed, if not please install from link.
Do you install chromedriver or geckodriver on the server? Your chromedriver should be in all of following directory:
chromedriver: /usr/bin/chromedriver /bin/chromedriver
/usr/local/bin/chromedriver /usr/local/chromedriver
Or, you can paste path directly:
driver = webdriver.Chrome(path='./chromedriver').
Also, use PyVirtualDisplay.
Your problem is due to no display in AWS. When you are trying to execute the command driver = webdriver.Firefox() or driver = webdriver.Chrome() the system tries to launch a Firefox or Chrome browser but because you do not have access to the display in remote access so it is crashing there.
Follow the steps given at this blog and you can create a virtual display to buffer frames. Then your script will not crash due to this problem

Selenium server throws error when attempting to run test with chrome or Internet Explorer

I have a python webdriver script which successfully runs the test on the remote server using firefox, however it throws an error when using chrome and internet explorer.
I have added the directory with both drivers to the server's path. I have also tried starting the server using:
java -jar .\selenium-server-standalone-2.45.0.jar -Dwebdriver.ie.driver=.\IEDriverServer.exe -role hub
I consistently get the same error in powershell:
"... - Exception: The path to the driver executable must be set by the webdriver.chrome.driver system property;..."
Working Script:
def setUp(self):
self.wd = webdriver.Remote(
desired_capabilities=DesiredCapabilities.FIREFOX)
Throws Error:
def setUp(self):
self.wd = webdriver.Remote(
desired_capabilities=DesiredCapabilities.CHROME)
What is the culprit of this problem?
You have the Selenium driver for Firefox installed and configured, but not for Chrome. Installing and configuring boils down to this (source):
Setup
ChromeDriver is a separate executable that WebDriver uses to control
Chrome. It is maintained by the Chromium team with help from WebDriver
contributors. If you are unfamiliar with WebDriver, you should check
out their own Getting Started page.
Follow these steps to setup your tests for running with ChromeDriver:
Ensure Chromium/Google Chrome is installed in a recognized location
ChromeDriver expects you to have Chrome installed in the default
location for your platform. You can also force ChromeDriver to use a
custom location by setting a special capability.
Download the ChromeDriver binary for your platform under the downloads section of this site
Help WebDriver find the downloaded ChromeDriver executable
Any of these steps should do the trick:
include the ChromeDriver location in your PATH environment variable
(Java only) specify its location via the webdriver.chrome.driver system property (see sample below)
(Python only) include the path to ChromeDriver when instantiating webdriver.Chrome (see sample below)
So, basically, you need to either set the path to your Chrome drive in the PATH, or instantiate the drive like this:
driver = webdriver.Chrome('/path/to/chromedriver')
Download the Chromedriver
from selenium import webdriver
driver = webdriver.Chrome('C:\\Users\\xxx\\Downloads\\chromedriver_win32\\chromedriver.exe')
driver.get("http://www.seleniumhq.org/")
The code is for JAVA , set the path similarly in python
If the PATH is not set in your environment variable , then set it programmatically as below:
System.setProperty("webdriver.chrome.driver", "Path_to_your_chromedriver.exe");
driver = new ChromeDriver();

Does Chrome Web Drivers needs to be in Client's System while using Selenium

I have tried searching the official documentation, but no result. Does Chrome Web Driver needs to be in client's system for a python script using Selenium to run? I basically want to distribute compiled or executable file versions of the application to the end user. How do i include Chrome Web driver with that package?
Yes you will have to download and put chromedriver to your system and then need to call in selenium code.
Download chromedriver from here : Chromedriver for selenium
Below code will help you to call chrome driver using selenium with python :
import os
from selenium import webdriver
chromedriver = "/Users/mike/Downloads/chromedriver" [you please put your actual path of chrome driver]
os.environ["webdriver.chrome.driver"] = chromedriver
driver = webdriver.Chrome(chromedriver)
Hope this help you.
If you are using selenium RC , then you can set path like below :
selenium = new DefaultSelenium(Server, ServerPort, "*googlechrome", DomainURL);
chromedriver needs to be installed on the machine that will launch the instance of the Chrome browser.
If the machine that launches the Chrome instance is the same machine as where the Python script resides, then the answer to your question is "yes".
If the machine that launches the Chrome instance is a machine different from the machine that runs your Python script, then the answer to your question is "no".

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