Switch to pathlib (#3392)

* switch to pathlib

* more pathlib

* useconvert env to path

* fix typo

* use resolve instead of absolute

* fix gitppod

* also allow parents

* replace more os operations

* fix string replacement feature

* make sure root dirs exsist

* fix replace function

* refactor duplicate code

* reduce code

* make sure dirs exist

* fix typo

* also create parent dirs

* fix match statement

* fix statments expecting string

* return getMigrationFileNames to old behaviour

* fully resolve config file

* make sure comparison works

* use pathlib in tasks

* fix file count test

* reduce code duplication in test + add test for part

* fix test

* re-add os

* Make pathlib usage simpler

InvenTree/common/views.py

@@ -1,7 +1,5 @@
 """Django views for interacting with common models."""
 
-import os
-
 from django.conf import settings
 from django.core.files.storage import FileSystemStorage
 from django.utils.translation import gettext_lazy as _
@@ -37,9 +35,9 @@ class MultiStepFormView(SessionWizardView):
     def process_media_folder(self):
         """Process media folder."""
         if self.media_folder:
-            media_folder_abs = os.path.join(settings.MEDIA_ROOT, self.media_folder)
-            if not os.path.exists(media_folder_abs):
-                os.mkdir(media_folder_abs)
+            media_folder_abs = settings.MEDIA_ROOT.joinpath(self.media_folder)
+            if not media_folder_abs.exists():
+                media_folder_abs.mkdir(parents=True, exist_ok=True)
             self.file_storage = FileSystemStorage(location=media_folder_abs)
 
     def get_template_names(self):