 
  
   
  
  Desktop\test.ps1:write-output 'test'test.py:# -*- coding: iso-8859-1 -*-
import subprocess, sys
p = subprocess.Popen(["powershell.exe",
              "C:\\Users\\<USER>\\Desktop\\test.ps1"],
              stdout=sys.stdout)
p.communicate()python test.pytest      for /f "tokens=xxx delims=yyy" %%a in ('тут нужная команда') do (
   echo %%a
)for /?      program > file
program > file 2>&1
program | program2
program | program2 2>&1