I am a Mac User, and I meet the problem of "Unable to find a matching set of capabilities" when I want to learn the selenium. I have installed python , Anaconda, pip, selenium.
Then I type the following code :
from selenium import webdriver
driver=webdriver.Firefox()
Howere, I got the following error messages:
SessionNotCreatedException: Unable to find a matching set of capabilities
I searched it on the internet and many people ask people to check the correct version. However, somebody say that ,must make sure that Firefox must in the "Applications" folder , and do not rename "Firefox". I followed the suggestion and I got it OK now. In the past , I reinstalled the Firefox because of version update and rename the new version to "Firefox2" , and so this trouble occured.
Now I hope that this article can help someone debug who also meet this kind of trouble.