Open windows cmd prompt and run cmds with python

[Extra]

Hello,

I'm trying to run cmds with python.

For example: I want my python program to be able to open/run MagicMirror by cd into it's directory(C:\MagicMirror) and running "node serveronly".

I tried to do this but it would run my desired cmd in the terminal running my python program. Therefore, it never ran/kept crashing.

I had this:

os.system('cmd /k "cd.. & cd.. & cd MagicMirror & node server only"')

My python program is located in a folder in my Downloads: "C:\Users\My-PC\Downloads\VoiceAssistant"
And the reason I cd.. twice is because when I manually open the cmd prompt I am in "C:\Users\My-PC" so I figured in order to get to "C:/" I cd.. twice.

But when I try running the code I end up here "C:\Users\My-PC\Downloads"

So, how do I cd into MagicMirror and run "node serveronly" using python?

I don't know if this makes sense, but any help would be greatly appreciated.

Thanks in advance.

[Gribouillis]

Not a Windows user here, but you could try

import subprocess as sp
process = sp.Popen(['cmd', '/k', 'node serveronly'], cwd='C:/MagicMirror')
process.wait()

[Extra]

Not a Windows user here, but you could try

import subprocess as sp
process = sp.Popen(['cmd', '/k', 'node serveronly'], cwd='C:/MagicMirror')
process.wait()

Great, Thanks.

It runs the command, but it stops running my current python script to execute the MagicMirror cmd.

Is there a way to open a whole new cmd prompt window and execute that chunk of code there, that way my main python script doesn't get interrupted and I can still use it in the background.

Here's what I mean:
This is what I get when I run it. I have my Voice Assistant run, and when I open MagicMirror it stops running because it runs the cmd in the same window, not a new one.

Output:
┌──────────────────────────────────────────────────── B.A.X.T.E.R ────────────────────────────────────────────────────┐
│ Listening...                                                                                                        │
└─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘


┌──────────────────────────────────────────────────── B.A.X.T.E.R ────────────────────────────────────────────────────┐
│ Recognizing...                                                                                                      │
└─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘


┌───────────────────────────────────────────────────── Commander ─────────────────────────────────────────────────────┐
│ hello                                                                                                               │
└─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘


┌──────────────────────────────────────────────────── B.A.X.T.E.R ────────────────────────────────────────────────────┐
│ Hello, how are you today?                                                                                           │
└─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘


┌──────────────────────────────────────────────────── B.A.X.T.E.R ────────────────────────────────────────────────────┐
│ Listening...                                                                                                        │
└─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘


┌──────────────────────────────────────────────────── B.A.X.T.E.R ────────────────────────────────────────────────────┐
│ Recognizing...                                                                                                      │
└─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘


┌───────────────────────────────────────────────────── Commander ─────────────────────────────────────────────────────┐
│ magic mirror                                                                                                        │
└─────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
[13.07.2022 20:47.16.529] [LOG]   Starting MagicMirror: v2.18.0
[13.07.2022 20:47.16.530] [LOG]   Loading config ...
[13.07.2022 20:47.16.532] [LOG]   Loading module helpers ...
[13.07.2022 20:47.16.532] [LOG]   No helper found for module: alert.
[13.07.2022 20:47.16.535] [LOG]   Initializing new module helper ...
[13.07.2022 20:47.16.536] [LOG]   Module helper loaded: updatenotification
[13.07.2022 20:47.16.536] [LOG]   No helper found for module: clock.
[13.07.2022 20:47.16.573] [LOG]   Initializing new module helper ...
[13.07.2022 20:47.16.574] [LOG]   Module helper loaded: calendar
[13.07.2022 20:47.16.574] [LOG]   No helper found for module: compliments.
[13.07.2022 20:47.16.574] [LOG]   No helper found for module: weather.
[13.07.2022 20:47.16.580] [LOG]   Initializing new module helper ...
[13.07.2022 20:47.16.580] [LOG]   Module helper loaded: newsfeed
[13.07.2022 20:47.16.580] [LOG]   All module helpers loaded.
[13.07.2022 20:47.16.610] [LOG]   Starting server on port 8080 ...
[13.07.2022 20:47.16.618] [LOG]   Server started ...
[13.07.2022 20:47.16.618] [LOG]   Connecting socket for: updatenotification
[13.07.2022 20:47.16.619] [LOG]   Starting module helper: updatenotification
[13.07.2022 20:47.16.620] [LOG]   Connecting socket for: calendar
[13.07.2022 20:47.16.620] [LOG]   Starting node helper for: calendar
[13.07.2022 20:47.16.620] [LOG]   Connecting socket for: newsfeed
[13.07.2022 20:47.16.620] [LOG]   Starting node helper for: newsfeed
[13.07.2022 20:47.16.620] [LOG]   Sockets connected & modules started ...
[13.07.2022 20:47.16.621] [LOG]
Ready to go! Please point your browser to: http://localhost:8080

Thanks.

[Gribouillis]

What happens if you remove the line process.wait() ?
Also, from what I read elsewhere, you could try

process = sp.Popen(['start', 'cmd.exe', '@cmd', '/k', 'node serveronly'], cwd='C:/MagicMirror')