Hi Rodrigo,Here is an example:import arcpy
from arcpy import env
env.workspace = r"C:\temp\python\test.gdb"
lstDatasets = arcpy.ListDatasets("*")
for dataset in lstDatasets:
lstFCs = arcpy.ListFeatureClasses("road_*", "", dataset)
for fc in lstFCs:
oldName = str(fc)
newName = oldName.replace("road", "RD")
newName = newName.replace("ns", "_NS12_13")
arcpy.Rename_management(fc, newName)