diff -r fda6c1a37662 -r f62625418bff controls/CustomStyledTextCtrl.py
--- a/controls/CustomStyledTextCtrl.py	Mon Mar 27 10:19:14 2023 +0200
+++ b/controls/CustomStyledTextCtrl.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
+
 from functools import reduce
 import wx
 import wx.stc
@@ -72,7 +72,7 @@
     new_length = len(new)
     common_length = min(old_length, new_length)
     i = 0
-    for i in xrange(common_length):
+    for i in range(common_length):
         if old[i] != new[i]:
             break
     if old_length < new_length:
@@ -102,7 +102,7 @@
                 x, _y = event.GetPosition()
                 margin_width = reduce(
                     lambda x, y: x + y,
-                    [self.GetMarginWidth(i) for i in xrange(3)],
+                    [self.GetMarginWidth(i) for i in range(3)],
                     0)
                 if x <= margin_width:
                     self.SetCursor(wx.Cursor(wx.CURSOR_ARROW))