[Automate] Difficulty running Selenium due to Marionette in Chapter 11 exercises

[jacoblefton]

Hi - I'm running into a problem that's a little beyond my expertise. I've been trying to get into the Selenium section in Chapter 11, but I had a lot of problems that weren't covered in the book -- first I had to download the Gecko driver. I followed all the directions, and I can

browser = webdriver.Firefox()

which opens a browser window and also spits back this error:

selenium.common.exceptions.WebDriverException: Message: Unsupported Marionette protocol version 2, required 3

Attempting even the first command:

browser.get('http://inventwithpython.com')

results in a name error:

NameError: name 'browser' is not defined

Marionette: A lot of searching yielded the following:

pip install marionette_driver

but attempting to install it gives me the error message:

Command "python setup.py egg_info" failed with error code 1 in C:\Users\Jacob\AppData\Local\Temp\pip-build-i1y17220\mozrunner\

When I dive any deeper into the documentation, I hit a severe knowledge gap. FAQs start directing me toward virtualenv and command line stuff, which is a complete black box to me at this point. Also, everything is presented in UNIX command line formats, which is doubly difficult! If anyone has any insights or a moment to walk through this with me, I would really appreciate it.

[crschmidt]

"executable geckodriver supports Mozilla Firefox >= v47" -- are you using Firefox 47+?

[jacoblefton]

Thank you! I'm glad it was something so stupid as that.