diff -r da5f1fa46f2b -r fb73a6b6622d controls/CustomTable.py
--- a/controls/CustomTable.py	Thu Oct 19 10:57:35 2017 +0300
+++ b/controls/CustomTable.py	Thu Oct 19 11:03:03 2017 +0300
@@ -88,8 +88,18 @@
         grid.CloseEditControl()
         grid.BeginBatch()
         for current, new, delmsg, addmsg in [
-            (self._rows, self.GetNumberRows(), wx.grid.GRIDTABLE_NOTIFY_ROWS_DELETED, wx.grid.GRIDTABLE_NOTIFY_ROWS_APPENDED),
-            (self._cols, self.GetNumberCols(), wx.grid.GRIDTABLE_NOTIFY_COLS_DELETED, wx.grid.GRIDTABLE_NOTIFY_COLS_APPENDED),
+                (
+                    self._rows,
+                    self.GetNumberRows(),
+                    wx.grid.GRIDTABLE_NOTIFY_ROWS_DELETED,
+                    wx.grid.GRIDTABLE_NOTIFY_ROWS_APPENDED
+                ),
+                (
+                    self._cols,
+                    self.GetNumberCols(),
+                    wx.grid.GRIDTABLE_NOTIFY_COLS_DELETED,
+                    wx.grid.GRIDTABLE_NOTIFY_COLS_APPENDED
+                ),
         ]:
             if new < current:
                 msg = wx.grid.GridTableMessage(self, delmsg, new, current-new)