Tester script was made in a way that it was working with older versions of sklearn, maybe because of older versions of python. I have updated it in a way that now cross validation part of the script is compatible with the latest version of sklearn.
Since all the projects and classroom content are tested only on the older version of scikit-learn, we are not upgrading it to the latest version. We will release updates once we refresh the content.
Tester script was made in a way that it was working with older versions of sklearn, maybe because of older versions of python. I have updated it in a way that now cross validation part of the script is compatible with the latest version of sklearn.