If the computer turns off unexpectedly, the shut down will not be detected. I won't update this for now unless someone actually wants to use this.
Simple python script to track your uptime on your computer and display it as a graph.
Example of graph generated after turning the computer on and off multiple times
Put the three python scripts in a single directory and make sure you have installed matplotlib (to install it, run pip install matplotlib in a terminal)
Open Task Scheduler, navigate to Task Scheduler (Local) > Task Scheduler Library, and right click on Task Scheduler Library. Click on Create Task
Change the group from your user to SYSTEM
Next, go to the Triggers tab, click on New, and choose At startup
Now you want to go to the Actions tab, click on New, and fill out the boxes like so:
Finally to avoid any issues, uncheck everything in the Conditions tab.
Next, do the same thing, but by replacing uptimeCounterStart.bat with uptimeCounterEnd.bat, and changing the trigger to this:
The last step is to create your batch scripts that will run your python scripts.
uptimeCounterStart.bat should look like this:
D:
cd D:\path\to\dir
py D:\path\to\dir\start.pyw
and uptimeCounterEnd.bat should look like this:
D:
cd D:\path\to\dir
py D:\path\to\dir\end.pyw
Once you've done all that, it should work. To make sure it's working, restart your PC and check for a file called data.txt