Blender Python path directory for file output node

Question

i'm trying to make a little script to change all file outputs node in my compositing scene, relatively to my file output render directory.

For example, if i render something in /Render/Combined/Combined_#### i want the file outputs nodes to create some folders in /Render/

So far, i've got this :

import bpy

import os

 # Get absolute path:
filepath = bpy.context.scene.render.filepath
absolutepath = bpy.path.abspath(filepath)

 # set the path for all file output nodes:
for scene in bpy.data.scenes:
    for node in scene.node_tree.nodes:
        if node.type == 'OUTPUT_FILE':
            node.base_path = absolutepath

And it works, but i can't find a way to get to the "superior" directory... Is someone out here have some answers ? thank you very much !

Answer 1

You can just add ../.. at the end of your absolutepath, like this

node.base_path = absolutepath+'../..'

or if you insist on getting the actual path cleanly, you can use the python os module to split the path into parts and then join them again except the last two

import bpy
import os

 # Get absolute path:
filepath = bpy.context.scene.render.filepath
absolutepath = bpy.path.abspath(filepath)

path = os.path.normpath(absolutepath)
parts = path.split(os.sep)

absolutepath = os.sep.join(parts[:-2])

# set the path for all file output nodes:
for scene in bpy.data.scenes:
    for node in scene.node_tree.nodes:
        if node.type == 'OUTPUT_FILE':
            node.base_path = absolutepath

If you want this to work even if your original path has a filename in the end, add

absolutepath, file = os.path.split(absolutepath)

before path = os.path.normpath(absolutepath)

Answer 2

Like this:

parent_dir = os.path.dirname(*your_path*)