You now have code that will change the read/write status of the drive depending on a pin state, log the temperature once a second a provide three different status indicators. But there could be more to do, if you’d like.
Maybe you want to add better error reporting (the OSError error code for a read only device is 30). Or log differently, or log to a different file. This was only a starting point, so make it your own!
The code from this guide is based on code from @jerryneedell and @edgecollective.