How to insert a subprocess output into a variable [duplicate]

Question

I'm trying to work with Powershell in python and work with get-disk command I tried to work with stdout and print it but the value of it is gone right after I use the Communicate() function Here's my code:

proc = subprocess.Popen(r"C:\WINDOWS\system32\WindowsPowerShell\v1.0\powershell.exe", stdin = subprocess.PIPE, stdout = subprocess.PIPE) stdout, stderr = proc.communicate('get-disk') print stdout

Any suggestions?

Why are you using two scripting languages when you can do everything with PowerShell on its own? PS C:\> Get-Disk bam. done. — Maximilian Burszley
– Maximilian Burszley, Commented Nov 7, 2017 at 19:48
you are just opeining a powershell process without parameters. I am not aware of any process that by default reads input parameters from stdin... did you google that? what about this? stackoverflow.com/questions/2768790/stdin-to-powershell-script — Harry
– Harry, Commented Nov 7, 2017 at 19:50
Use this link https://stackoverflow.com/a/75175057/12780274 — henrry
– henrry, Commented Jan 19, 2023 at 16:05

zodiac · Accepted Answer · 2017-11-07 19:50:43Z

You could try the following, which will read the std output of your process when starting the process with

proc=Popen('Some process',stdout=subprocess.PIPE) stdout = proc.stdout.read()

pankaj mishra · Accepted Answer · 2017-11-08 10:20:45Z

You can do this as done below

from subprocess import Popen from subprocess import Popen, CREATE_NEW_CONSOLE,PIPE,STDOUT import subprocess command="powershell.exe get-disk" #This will open the command in a new console proc=Popen(command,creationflags=CREATE_NEW_CONSOLE,stdout=subprocess.PIPE) read_stdout=[] for lines in proc.stdout.readlines(): read_stdout.append(lines) print read_stdout

Jebby · Accepted Answer · 2017-11-08 10:42:00Z

I recomend proc.stdout.read() instead of proc.communicate()

What you want is something like this:

import subprocess cmd = r"C:\WINDOWS\system32\WindowsPowerShell\v1.0\powershell.exe get-disk" proc = subprocess.Popen(cmd, stdout=subprocess.PIPE) print(proc.stdout.read()) proc.stdout.close()

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