Reset All Marking in spotfire using ironpython

# Import required libraries
from Spotfire.Dxp.Data import *
from Spotfire.Dxp.Application.Filters import *

# Loop through each data table
for dataTable in Document.Data.Tables:
 for marking in Document.Data.Markings:
  rows = RowSelection(IndexSet(dataTable.RowCount, False))
  marking.SetSelection(rows, dataTable)