--- a/controls/FolderTree.py	Mon Mar 27 10:19:14 2023 +0200
+++ b/controls/FolderTree.py	Fri Oct 28 12:39:15 2022 +0800
@@ -23,7 +23,7 @@
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 
-from __future__ import absolute_import
+
 import os
 
 import wx
@@ -31,7 +31,7 @@
 
 from util.BitmapLibrary import GetBitmap
 
-DRIVE, FOLDER, FILE = range(3)
+DRIVE, FOLDER, FILE = list(range(3))
 
 
 def sort_folder(x, y):
@@ -99,7 +99,7 @@
         self.Filters = {}
         if self.Filter is not None:
             filter_parts = filter.split("|")
-            for idx in xrange(0, len(filter_parts), 2):
+            for idx in range(0, len(filter_parts), 2):
                 if filter_parts[idx + 1] == "*.*":
                     self.Filters[filter_parts[idx]] = ""
                 else:
@@ -115,7 +115,7 @@
     def _GetFolderChildren(self, folderpath, recursive=True):
         items = []
         if wx.Platform == '__WXMSW__' and folderpath == "/":
-            for c in xrange(ord('a'), ord('z')):
+            for c in range(ord('a'), ord('z')):
                 drive = os.path.join("%s:\\" % chr(c))
                 if os.path.exists(drive):
                     items.append((drive, DRIVE, self._GetFolderChildren(drive, False)))