可以运行python文件，编辑它，然后在第二个终端运行它

I'm running a simulation (more on this in a sec) and one of the files for this simulation is a python file that contains configuration details. I want to run multiple versions of this simulation, but I don't know if running one simulation, opening another terminal, then editing the python file and running a second simulation will ruin the first simulation. Does python have a concept of "source code" is separate from the actual process? Can I edit the file safely? These simulations take a while.I'm running a simulation (more on this in a sec