How to run cmd commands from python?

Question

I am having problems with running some cmd commands from python script. Found lot of examples and stuff explaining subprocess.run but can't get my scripts running...

I have batch script with commands like:

set PATH=%PATH%;"C:\d\program\program_4\bin"
set PROGRAM_WAS_RUNNING=0

echo Starting PROGRAM (headless)
programd --file "C:\d\projects\project1\tool\program.exe" --dont-breakaway-from-job
if %ERRORLEVEL%==0 goto next0
    echo -- PROGRAM with GUI is running
    set PROGRAM_WAS_RUNNING=1

:next0

.. etc

Tried with this code but won't work:

command = subprocess.run(["set", "PATH=%PATH%;C:\d\program\program_4\bin"])
command = subprocess.run(["set", "PROGRAM_WAS_RUNNING=0"])

Can someone please give an example and explain in short what would be the best way to translate all of these and other similar batch commands into Python? Thanks,

Please check out this method https://datatofish.com/command-prompt-python/ — Sam Varghese, Jun 01 '21 at 12:18
`set` isn't a program, it's a [command specific to the `cmd` shell](https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/set_1). Setting environment variable in Python [requires a completely different method](https://stackoverflow.com/questions/5971312/how-to-set-environment-variables-in-python). You are not being clear about what/why exactly you are trying to do, are you trying to port this batch file to Python, or are you trying to run it directly through Python? — metatoaster, Jun 01 '21 at 12:23
I am trying to run all of batch scripts commands directly from python script — John, Jun 01 '21 at 12:26

Adarsh Raj · Answer 1 · 2021-06-01T12:28:36.503

0

It's Simple

    import os
    os.system("your commands here")

Notepad Example:

>>> import os
>>> os.system("notepad.exe")
0
>>>

edited Jun 01 '21 at 12:28

answered Jun 01 '21 at 12:19

Adarsh Raj

325
4
17

I have edited the question and here's the screenshot: https://i.stack.imgur.com/3dOIV.jpg – Adarsh Raj Jun 01 '21 at 12:30
Well, can you provide me sample of bat file. so can i check what's the issue – Adarsh Raj Jun 01 '21 at 12:31
I think I have managed to make it work, at least first several lines – John Jun 01 '21 at 12:34

score -1 · Answer 2 · answered Jun 01 '21 at 12:35

-1

It's import to study 'os' module. It provides some functions to facilitate the interface with Operating System like

os.putenv(key, value)
os.getenv(key, default=None)
os.uname()
os.system(command)

answered Jun 01 '21 at 12:35

Felipe Cavalcante da Rocha

11
1

How to run cmd commands from python?

2 Answers2