Is there a way to pass flags to runpy?

I am looking for a way to pass miscellaneous options using runpy or other tools.

In particular, I would like to get the output of an optimized python script in another non-optimized python script.

python -O tobeoptimized.py

I have tried using subprocess but I can't extract the object that I need as I do in runpy.

from subprocess import PIPE, run
command = ['python','-O','tobeoptimized.py']
result = run(command, stdout=PIPE, stderr=PIPE, universal_newlines=True)

from Is there a way to pass flags to runpy?