Before starting this exercise, you will need to complete the steps necessary to set up both an AdWords and a Google Ads client library of your choice. If you haven't already, you will need to generate a developer token and OAuth2 tokens and use them to configure both libraries.
The AdWords client library can be installed with your preferred language's package management system, for example:
Similarly for the Google Ads client libraries:
Once you've successfully completed the installation steps described above, you're ready to proceed. To verify that your setup is correct, try executing the Get Campaigns example.