How a script can know if it has been called with the -i command line option?

[Peter Wang]

Michele Simionato wrote:
> The subject says it all, I would like a script to act differently when
> called as
> $ python script.py and when called as $ python -i script.py. I looked
> at the sys module
> but I don't see a way to retrieve the command line flags, where should
> I look?

I realize this is quite a hack, but the entire command line is
preserved in the process's entry in the OS's  process table.  if you do
"ps -ax" you will see that the interpreter was invoked with -i.  I
didn't test this under windows, but it works on Mac and Linux.