long-running python program ram usage

Question

I am currently working on a project where a python program is supposed to be running for several days, essentially in an endless loop until an user intervenes. I have observed that the ram usage (as shown in the windows task manager) rises - slowly, but steadily. For example from ~ 80 MB at program start to ~ 120 MB after one day. To get a closer look at this, I started to log the allocated memory with tracemalloc.get_traced_memory() at regular intervalls throughout the program execution. The output was written to the time series db (see image below).

^{tracemalloc output for one day runtime}

To me it looks like the memory that is needed for the program does not accumulate over time. How does this fit in the output of the windows task manager? Should I go through my program to search for growing data structures? Thank your very much in advance!