Automate the Boring Stuff with Python outdated instructions for launching Selenium browser
Question: ### \--------Reply to Post being Labeled as a Duplicate question

Since I am still learning the programming basics I was not sure whether the
material on the alternate post was relevant especially since I was on the
first example of code in the the section. So I believe it's beneficial to have
the exact code requested by the textbook with note of the error and key words
which will improve search engine rank for people troubleshooting common errors
in Automate the Boring Stuff with Python. This unique phrasing of the question
herein the post will help fellow beginners using this book understand the
error is a result of outdated programming instructions.*

Also, special kudos to my friend here, Stef Verdonka, who has responded with
simple and easy to understand fix.

## _Automate the Boring Stuff with Python outdated instructions for launching
Selenium browser_

## _Solution_

*********See Stef Verdonk's answer.

## _Original post_

I am a noob python programmer and have recently been pushing through my first
textbook on this language called "Automate the Boring Stuff with Python". I
have gotten to the web scraping section and I am being instructed to access
firefox via Selenium. I have found a few resources online about my error
message but I do not have enough experience to relate back to a solution for
myself. Here is the code and then error code it leaves.

    
    
    from selenium import webdriver
    browser = webdriver.Firefox()
    Traceback (most recent call last):
    File "<pyshell#1>", line 1, in <module>
    browser = webdriver.Firefox()
    File "C:\Python35-32\lib\site-packages\selenium\webdriver\firefox\webdriver.py", line 81, in __init__
    self.binary, timeout)
    File "C:\Python35-32\lib\site-packages\selenium\webdriver\firefox\extension_connection.py", line 51, in __init__
    self.binary.launch_browser(self.profile, timeout=timeout)
    File "C:\Python35-32\lib\site-packages\selenium\webdriver\firefox\firefox_binary.py", line 68, in launch_browser
    self._wait_until_connectable(timeout=timeout)
    File "C:\Python35-32\lib\site-packages\selenium\webdriver\firefox\firefox_binary.py", line 98, in _wait_until_connectable
    raise WebDriverException("The browser appears to have exited "
    selenium.common.exceptions.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.
    

So I believe that my firefox does not support Selenium as it has in past
versions. link to back this up: [FirefoxDriver will stop working at version 47
of Firefox](http://seleniumsimplified.com/2016/04/how-to-use-the-firefox-
marionette-driver/)

So that's all I've got right now I would appreciate some help on this and I
think it would help a lot of a lot of other people out if we could format a
simple solution to this problem that seems to be pretty common. Sorry if this
has been asked. I've looked through a lot of the questions on here and just
couldn't get any success.

I'm using python 3.5 on windows 10


Answer: You were already half way with the link you provided. Since the latest firefox
47 upgrade. The selenium web-driver has become deprecated and you will need
Marionette to run firefox:

[Instructions here](https://developer.mozilla.org/en-
US/docs/Mozilla/QA/Marionette/WebDriver)

Another solution which would allow you to keep using existing scripts is to
downgrade firefox. For wich I would suggest downgrading to version 45 (ESR
version). This will ensure that you can still get security updates:

[Download firefox 45 ESR](https://www.mozilla.org/en-
US/firefox/organizations/all/)

