Python cant get output from PowerShell - powershell

Question

Im trying to use this code to get a list of Actions in the SCCM pushed into python, but all I get in retun is an empty bytes string.
count = r"""
if (-NOT ([Security.Principal.WindowsPrincipal][Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator"))
{
$arguments = "& '" +$myinvocation.mycommand.definition + "'"
Start-Process powershell -Verb runAs -ArgumentList $arguments
Break
}
$CMGR = New-Object -ComObject CPApplet.CPAppletMgr
$ClientActions = Out-String ($CMGR.GetClientActions() | Select Name).count
$ClientActions
"""
def runPS(command):
import subprocess
process=subprocess.run(["powershell", "-ExecutionPolicy", "Bypass", command],stdout=subprocess.PIPE);
print(process.stdout)
All this outputs is b''
What am I doing wrong???
EDIT: I figured part of it out. Its because it's tecnically running another powershell within this one (Python >> Powershell >> Admin Powershell), and the second one doesn't return its value to the first. (Python <> Powershell >> Admin Powershell)

Answer 1

I would suggest using check_output() instead of run() here. That allows you to detect a non-zero exit code from the child process. More information here. The Powershell might be failing for some reason, but you're not capturing stderr or checking the return code.
Something like this might be more robust:
def runPS(command):
import subprocess
output = subprocess.check_output(["powershell", "-ExecutionPolicy", "Bypass", command])
return output
EDIT: I figured part of it out. Its because it's tecnically running another powershell within this one (Python >> Powershell >> Admin Powershell), and the second one doesn't return its value to the first. (Python <> Powershell >> Admin Powershell)
Hmm. Sorry, I don't know powershell, so I can't help you with that half of it.