Help with run commands from a python script

[necoxiro]

Hi, I'm a noob in python and I'm trying hard to get it to work.

I want to run a command line from a python script that will launch a blender render like so :

import os
command = "C:\Program Files\Blender Foundation\Blender\blender untitled 02.blend -b -a"
os.system(command)

or

import subprocess
subprocess.Popen("C:\Program Files\Blender Foundation\Blender\blender.exe untitled 02.blend -b -a")

But it doesn't work. Help will be appreciated..

[snippsat]

If pass in a string command need shell=True.
Better and safer to pass in a list.
Can try:

import subprocess

subprocess.Popen([r'C:\Program Files\Blender Foundation\Blender\blender.exe', 'untitled', '02.blend', '-b', '-a'])

If you use blender some should also add it to Windows Path.
Then can call just blender.

import subprocess

subprocess.Popen(['blender', 'untitled', '02.blend', '-b', '-a'])

[necoxiro]

Thank you for your answer, but how can I pass a variable with this?

I tried that and didn't work :

newCol = [0.22447,1, 0.22447,1]
subprocess.Popen([r'C:\Program Files\Blender Foundation\Blender\blender.exe', 'untitled02.blend', '-b', '-a', '--', newCol])

[snippsat]

I guess --newCol is one command?
All command should be one(string) element in the list.

[r'C:\Program Files\Blender Foundation\Blender\blender.exe', 'untitled02.blend', '-b', '-a', '--newCol']

[Skaperen]

i'd use subprocess.call ... but i do things in weird ways.

[necoxiro]

Here it is what I was working on.

https://www.facebook.com/shibigraphicspo...6461081783

Automation Project - Python & Blender
This can be very useful while making video mock-ups for presenting a product to a client.

And again, thank you snippsat for your answers :)

[Skaperen]

facebook does not let me see things. it wants me to sign in to see stuff. to be able to sign in i would have to sign up. but i choose not to do that.

can you post it somewhere else?