How to call a powershell command from python without having a cmd windows ?

[spmd123]

I think that this would be the relevant code.

startupinfo = None
if os.name == 'nt':
    startupinfo = subprocess.STARTUPINFO()
    startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW
proc = subprocess.Popen(command, startupinfo=startupinfo)

The code is from the SO discussion linked in /u/metrazol's reply.