selenium.common.exceptions.SessionNotCreatedException: Message: Unable to find a matching set of capabilities with Firefox 46 through Selenium

I must have some versions here that don’t match up since I can’t get Selenium with Python to fire up a Firefox web browser. I’m using an older version of Firefox because other people in here have the same old version of Python and for them the old version of Firefox works best.

Expected browser binary location, but unable to find binary in default location, no ‘moz:firefoxOptions.binary’ capability provided using GeckoDriver

from selenium import webdriver; browser= webdriver.Firefox(); browser.get('http://www.seleniumhq.org'); When I try to run this code, it gives me an error 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. Any thoughts-highly appreciated! Answers: Thank you for visiting the Q&A … Read more