import arcpy mxd = arcpy.mapping.MapDocument(r"P:\G4910\G4910_06\Data\Data\Exercise10\Austin_TX.mxd") df = arcpy.mapping.ListDataFrames(mxd, "Parks")[0] addLayer = arcpy.mapping.Layer(r"parks.lyr") arcpy.mapping.AddLayer(df, addLayer, "BOTTOM") mxd.saveACopy(r"P:\G4910\G4910_06\Data\Data\Exercise10\Austin_TX.mxd") del mxd, addLayer
import arcpy
mxd = arcpy.mapping.MapDocument(r"P:\G4910\G4910_06\Data\Data\Exercise10\Austin_TX.mxd") dfList = arcpy.mapping.ListDataFrames(mxd, "Parks") addLayer = arcpy.mapping.Layer("parks.lyr")
for df in dfList:
arcpy.mapping.AddLayer(df, addLayer, "BOTTOM")
mxd.saveACopy(r"P:\G4910\G4910_06\Data\Data\Exercise10\Austin_TX.mxd") del mxd, addLayer