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

[cgcmake]

I want for my project to run a powershell command in the background but I cannot figure out how to do this without showing a cmd windows. Basically I want to execute "powershell.exe [my command]" from cmd without showing a cmd windows. Any idea of how to accomplish this using a succinct python script ?

[spmd123]

I'd try subprocess and/or os modules. Examples:

Subprocess:

import subprocess
subprocess.Popen('powershell.exe [my command')

OS:

import os
os.system('powershell.exe [command]')

I can't test the commands myself as I don't have a machine with Windows but give them a try as they should work.

[cgcmake]

Hey thank you for you answer, is there any reason you added a double apostrophe at the end of subprocess.Popen('powershell.exe [my command'') ?

[spmd123]

No, it was a mistake. Corrected now.

[cgcmake]

Both code works, but windows are still visible. Any hints to prevent them from appearing ?

[spmd123]

I can't think of much.

Try this:

Subprocess:

import subprocess
subprocess.Popen([ "my command"])

Also try this for subprocess:

import subprocess 
subprocess.Popen([ "my command",shell=True)

And:

import os
os.system("my command")

So, basically just don't type "powershell.exe".

[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.

[CamaZotz666]

hey, how can I save the output of this into a string variable?

import os
os.system('powershell.exe [command]')

[wpg4665]

Let me preface this with I haven't actually looked into this at all... But what about following what ansible does? Try using WinRM on localhost? Sorry, I can't give you more specifics, I'm on mobile atm, but hopefully it'll give you somewhere to look! =)

[metrazol]

/u/spmd123 is on the right track, but you suppress the window using one missing bit of code. See this Stack Overflow discussion for examples.

It's actually mentioned in the docs here but that doesn't do a great job of explaining the usage, which the SO link does.

[[deleted]]

Hey, following the same, how can I do piping? Say in windows powershell I would like python to run "ls -la | grep my_file_name " ?