5. Unzip the downloaded revitpythonshell-master package from step 2 and copy the contents of the folder revitpythonshell-master\revitpythonshell-master\RevitPythonShell\DefaultConfig and make a folder with RevitPythonShell2019 or whatever version the Revit version you want to work with and paste the contents into this folder at the path shown in the image below.