Trouble Setting Up Selenium with FireFox (Python 3 on Windows 10))

[gw1500se]

I have a script that used to work with Python 2 and I have upgraded to Python 3. I have been going in circles trying different suggestions for solving my problem but nothing has worked. I get the error:

selenium.common.exceptions.SessionNotCreatedException: 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

Here is my current attempt:

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.
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from selenium import webdriver
from selenium.webdriver.firefox.service import Service
from selenium.webdriver.firefox.options import Options as FirefoxOptions
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.
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options=FirefoxOptions()
service=Service(r"c:\cygwin64\geckodriver.exe")
options.add_argument("-headless")
driver=webdriver.Firefox(service=service,options=options)

Can someone help me through this? TIA.

[deanhystad]

Print the entire error message including the trace information.

[gw1500se]

Thanks for the reply:

Traceback (most recent call last):
File "C:\cygwin64\home\MyID\spamcop.pyw", line 28, in <module>
driver=webdriver.Firefox(service=service,options=options)
File "C:\Users\MyID\AppData\Roaming\Python\Python311\site-packages\selenium\webdriver\firefox\webdriver.py", line 196, in __init__
super().__init__(command_executor=executor, options=options, keep_alive=True)
File "C:\Users\MyID\AppData\Roaming\Python\Python311\site-packages\selenium\webdriver\remote\webdriver.py", line 286, in __init__
self.start_session(capabilities, browser_profile)
File "C:\Users\MyID\AppData\Roaming\Python\Python311\site-packages\selenium\webdriver\remote\webdriver.py", line 378, in start_session
response = self.execute(Command.NEW_SESSION, parameters)
File "C:\Users\MyID\AppData\Roaming\Python\Python311\site-packages\selenium\webdriver\remote\webdriver.py", line 440, in execute
self.error_handler.check_response(response)
File "C:\Users\MyID\AppData\Roaming\Python\Python311\site-packages\selenium\webdriver\remote\errorhandler.py", line 245, in check_response
raise exception_class(message, screen, stacktrace)
selenium.common.exceptions.SessionNotCreatedException: 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

This is line 28:

driver=webdriver.Firefox(service=service,options=options)

[snippsat]

Selenium is unable to find the Firefox binary,set corrct path to your firefox.exe binary.
Here is working test that i run.

from selenium import webdriver
from selenium.webdriver.firefox.service import Service
from selenium.webdriver.firefox.options import Options as FirefoxOptions
from selenium.webdriver.common.by import By

# Specify the Firefox binary path
options = FirefoxOptions()
options.binary_location = r"C:\Program Files (x86)\Mozilla Firefox\firefox.exe" # Update with your correct path
options.add_argument("-headless")  

service = Service(r"C:\cmder\bin\geckodriver.exe")
driver = webdriver.Firefox(service=service, options=options)
url = "https://www.schneider-group.com/en/about/contacts/"
driver.get(url)
heading = driver.find_element(By.CSS_SELECTOR, '#bx_3218110189_13 > p')
print(heading.text)

Output:
Business Center "Yerevan Plaza", Grigor Lusavorich str. 9, Yerevan, 0015, Armenia

[gw1500se]

Thanks for the reply. Python 2 did not require the location of firefox itself. I didn't know that was needed for python 3. That seems to have gotten me over that hump.

[AlluminumFoil]

It's usually because Selenium can't locate Firefox properly. Check the geckodriver path and that it matches your system setup. You can explicitly set the path to the Firefox binary.