Invoking a PowerShell script from Python

Question

I\'m trying to start a PowerShell script from python like this:

psxmlgen = subprocess.Popen([r\'C:\\WINDOWS\\system32\\WindowsPowerShell\\v1.0\\powershell.ex         


        

Answer 1

First, Set-ExecutionPolicy Unrestriced is on a per user basis, and a per bitness basis (32-bit is different than 64-bit).

Second, you can override the execution policy from the command line.

psxmlgen = subprocess.Popen([r'C:\WINDOWS\system32\WindowsPowerShell\v1.0\powershell.exe',
                             '-ExecutionPolicy',
                             'Unrestricted',
                             './buildxml.ps1',
                             arg1, arg2, arg3], cwd=os.getcwd())
result = psxmlgen.wait()

Apparently you can access the 64-bit PowerShell from 32-bit PowerShell with this path (thanks to @eryksun in comments):

powershell64 = os.path.join(os.environ['SystemRoot'], 
    'SysNative' if platform.architecture()[0] == '32bit' else 'System32',
    'WindowsPowerShell', 'v1.0', 'powershell.exe')

Answer 2

For those of us who wanted to know how to display the values of arg1, arg2 and arg3 after it was passed to powershell, all you need to do is:

Write-Host $args[0]
Write-Host $args[1]
Write-Host $args[2]