How to make an 'if' statement to check if a file in a directory is a folder type?

Archive Python API
1

Hello,

I need to index some folders from a defined directory into a list. The code below works fine, but the problem is that it also indexes all the other types of files (jpeg, png…).
Is there a way to make an ‘if’ statement to check the type of the file, so it only indexes folder types? Since the folders don’t have extensions… I’m on Windows…

def folders_in_a_list(self, context):

    dirListing = os.listdir("C:\some_path")
    
    list_of_folders = []
    for item in dirListing:
	# Pseudo Code
	if item == folder_type # How can I make sure the items are exclusively folders and not any other type of files?
	    list_of_folders.append(item)

Thanks.

2

This isn’t really a blender specific question, it’s just regular old python: https://stackoverflow.com/questions/2212643/python-recursive-folder-read

3

Thanks, I’ll have a look.

4

I tried these ways to get it done but none of it is working. What am I doing wrong?

Trial 1:

    for item in os.listdir("some_path"):
        if os.path.isdir(item):
            list_of_folders.append(item)

Trial 2:

    for root, subdirs, files in os.walk("some_path"):
        list_of_folders.append(subdirs)
5

your first example would work if you passed isdir the full path. “item” is a string, so you’re just getting the individual folder name, not some object that os.path can use to get more information. in other words:

import os
from pprint import pprint as pp

list_of_folders = []
search_path = "C:/windows/"
for item in os.listdir(search_path):
    if os.path.isdir(search_path + item):
        list_of_folders.append(item)

pp(list_of_folders)

edit: worth noting that os.walk is the same way, it just returns strings and you’ll need to do more work to turn them into file references or whatever you need.

6

Thank you very much, it worked!

7

See Python’s pathlib, it makes this kind of stuff easier to work with.

1 Like
8

Thanks for the link!

One last question, I have a drop down list that indexes all the folders from a main folder. I want the button with a ‘folder’ icon to open that selected folder in Windows explorer.

Capture
How do I retrieve the name (as a string) of the selected folder via that drop down list?
I want use the string name to concatenate it to the main folder’s path…

I put here only the relevant code:

class OpenCategoryFolder(bpy.types.Operator):
    bl_idname = "open.category_folder"
    bl_label = "Open Category Folder"
    bl_description = "Open selected category's folder in Windows explorer"
    bl_options = {'REGISTER', 'UNDO'}

    def execute(self, context):
        lib_path = context.preferences.addons[__name__].preferences.sculpt_alphas_library
        selected_category_name = # What should I put here if I want to have the name of the selected folder as a string?
        
        os.startfile(lib_path + os.sep + selected_category_name)
        
        return {'FINISHED'}


class CategoryPropertyScene(bpy.types.PropertyGroup):
    
    Categories: EnumProperty(items = preview_sub_folders_categories)


def sculpt_alphas_categories_prepend(self, context):
    layout = self.layout
    
    row = layout.row(align=True)
    row.prop(context.scene.category_pointer_prop, "Categories", text = '')
    row.operator("open.category_folder", text = "", icon ="FILE_FOLDER")


def register():

    Scene.category_pointer_prop = bpy.props.PointerProperty(type = CategoryPropertyScene)