Running PowerShell Script from Python

Question

I'm trying to run a Powershell Script ( check below ) First remark, my Powershell script, when running with Powershell works fine, giving the expected result ( closing all open folders ) , but I have to call this from a Python script, therefore I tried using subprocess.Popen, but I'm having the error : "io.UnsupportedOperation: fileno"

Tried several different things already, but the solutions suggested aren't working.

I'm trying to call the following Powershell Script :

$shell = New-Object -ComObject Shell.Application 
$shell.Windows() | Format-Table LocationName, LocationURL 
$window = $shell.Windows() 
$window | ForEach-Object { $_.Quit() }

The idea is to close all the open folders, and directly running with Powershell works as expected.

Then I tried to call this script from Python :

p = subprocess.Popen(['powershell.exe', 'C:\\Users\\(correct subfolders)\\TEST.ps1'])

or

p = subprocess.Popen(['C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\powershell.exe', 'C:\\Users\\(correct subfolders)\\TEST.ps1'])

and they don't return errors, a cmd window opens, but nothing happens. Then I tried the following :

p = subprocess.Popen(['powershell.exe', 'C:\\Users\\(correct subfolders)\\TEST.ps1'], stdout=sys.stdout)

But I have the following error ( check below )

File "<pyshell#15>", line 1, in <module>
    p = subprocess.Popen(['powershell.exe', 'C:\\Users\\FernanP\\Desktop\\TEST.ps1'], stdout=sys.stdout)
  File "C:\Users\FernanP\AppData\Local\Programs\Python\Python36-32\lib\subprocess.py", line 667, in __init__
    errread, errwrite) = self._get_handles(stdin, stdout, stderr)
  File "C:\Users\FernanP\AppData\Local\Programs\Python\Python36-32\lib\subprocess.py", line 922, in _get_handles
    c2pwrite = msvcrt.get_osfhandle(stdout.fileno())
io.UnsupportedOperation: fileno

I looked into similar Questions here, and people said about the Pillow version, but I'm currently using 6.1.0, so it should not be a problem.

Therefore, either an equivalent to the powershell script directly in Python would be enough, or a way to deal with this issue. Hope I informed sufficiently. KR

Nirav Mistry · Accepted Answer · 2019-07-25 04:05:16Z

9

Here I have created my own function to run any powershell script with its parameters

import subprocess  # IMPORT FOR SUB PROCESS . RUN METHOD

POWERSHELL_PATH = "powershell.exe"  # POWERSHELL EXE PATH
ps_script_path = "C:\\PowershellScripts\\FTP_UPLOAD.PS1"  # YOUR POWERSHELL FILE PATH


class Utility:  # SHARED CLASS TO USE IN OUR PROJECT

    @staticmethod    # STATIC METHOD DEFINITION
    def run_ftp_upload_powershell_script(script_path, *params):  # SCRIPT PATH = POWERSHELL SCRIPT PATH,  PARAM = POWERSHELL SCRIPT PARAMETERS ( IF ANY )

        commandline_options = [POWERSHELL_PATH, '-ExecutionPolicy', 'Unrestricted', script_path]  # ADD POWERSHELL EXE AND EXECUTION POLICY TO COMMAND VARIABLE
        for param in params:  # LOOP FOR EACH PARAMETER FROM ARRAY
            commandline_options.append("'" + param + "'")  # APPEND YOUR FOR POWERSHELL SCRIPT

        process_result = subprocess.run(commandline_options, stdout = subprocess.PIPE, stderr = subprocess.PIPE, universal_newlines = True)  # CALL PROCESS

        print(process_result.returncode)  # PRINT RETURN CODE OF PROCESS  0 = SUCCESS, NON-ZERO = FAIL  
        print(process_result.stdout)      # PRINT STANDARD OUTPUT FROM POWERSHELL
        print(process_result.stderr)      # PRINT STANDARD ERROR FROM POWERSHELL ( IF ANY OTHERWISE ITS NULL|NONE )

        if process_result.returncode == 0:  # COMPARING RESULT
            Message = "Success !"
        else:
            Message = "Error Occurred !"

        return Message  # RETURN MESSAGE

answered Jul 25, 2019 at 4:05

Nirav Mistry

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3 Comments

spYder Over a year ago

hanks for the help, indeed I'm not having the error anymore, so that part is fixed. BUT.... it does nothing... It just works ( delete the open folders ) when I click the powershell script with the right button "run with powershell".

spYder Over a year ago

Managed to run using just the "commandline_options " in the end, Thanks for the help!

Ryan Harris Over a year ago

This worked for me after I realized how to use it. Since this is a class, you need to either import/call it from another script or you could add the following script to the end of this script to see the responses directly: ``` if name == "main": response = Utility.run_ftp_upload_powershell_script(ps_script_path) print(response) ```

Gravity Mass · Accepted Answer · 2019-07-24 17:40:41Z

6

You can use subprocess.run and need PIPE and shell. The following code worked for me:

import subprocess
result = subprocess.run([r'C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe', r'C:\Users\(correct subfolders)\TEST.ps1'], stdout=subprocess.PIPE, stderr=subprocess.STDOUT, shell=True)
print(result)

Printing the result can give you the return value like if the command was successfully executed. If you want to extract the result value, you can do,

print(result.stdout.decode('utf-8'))

answered Jul 24, 2019 at 17:40

Gravity Mass

6038 silver badges13 bronze badges

2 Comments

spYder Over a year ago

Thanks for the help, indeed I'm not having the error anymore, so that part is fixed. BUT.... it does nothing... It just works when I click the powershell script with the right button "run with powershell". No idea why

Gravity Mass Over a year ago

@aranhaplf I used the same function as the solution that you selected man!

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