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


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?


This isn’t really a blender specific question, it’s just regular old python:

Thanks, I’ll have a look.

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):

Trial 2:

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

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):


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.

Thank you very much, it worked!

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

1 Like

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.

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)