Creating CSV is great; you can pretty much import that into any spreadsheet or database. What if you just want to skip that step and push your Raspberry Pi Zero data directly to Google spreadsheets? With Google's API and Python libraries, you can securely send your data to a spreadsheet in your Google account.
If you don't have a Google account, you will definitely need one for this recipe. The Google Developer documentation for Getting Started will have the most up-to-date instructions on setting up your application for authentication, but we will skip through it here. You can always refer to https://developers.google.com/api-client-library/python/start/get_started if you hit an issue.
First, go to the Google API Console located at https://console.developers.google.com/apis . When you click on Credentials, you will see a screen like this one:
Click on Credentials and the Create credentials dropdown...