How do I get different results with same random seed, same computer, same program #python

I am running a simulation with a lot of modules. I use random a number of times. I read input files. I use rounding. Of course, I am setting a random.seed(1) in the very first line of my program, immediately after importing random.

Even though, shouldn't I get exactly the same result running the same program same parameters in the same computer with the same input files?