subprocess.Popen for lively data reading?

[Skaperen]

i want to put together a way to do it without threading. i want to be able to mix analyses of the data without the complexities of threading. i'm just trying figure out early whether it is better to start all these child processes with subprocess or with os. coming from C programming, using os will be familiar (fork, etc). but if subprocess can easily do it, that should be the way to go. i just want to know in studying subprocess will take lots of time for this.