import arcpy

arcpy.env.workspace = "path"
arcpy.env.overwriteOutput = True

allfeatures = arcpy.ListFeatureClasses()
print allfeatures
for feature in allfeatures:
    desc = arcpy.Describe(feature)
    shape = desc.shapeType
if shape == "Point":
    name = feature[:-4]
    lyrname = name +"_lyr"
    arcpy.MakeFeatureLayer_management(feature, lyrname)
    outputlyr = lyrname + ".lyr"
    lyr=arcpy.SaveToLayerFile_management(lyrname, outputlyr)
    outputkmz = name + ".kmz"
    arcpy.LayerToKML_conversion(lyr,outputkmz)

import arcpy
mxd = arcpy.mapping.MapDocument("path")
layers = arcpy.mapping.ListLayers(mxd)
for layer in layers:
    print layer.name
    if layer.supports("LABELCLASSES"):
        print "yeeeah"
        #layer.labelClasses
        for lblclass in layer.labelClasses:
            lblclass.expression = "[ORIG_FID]"
            layer.showLabels = True
            #lblclass.showClassLabels
        layer.showLabels = True
mxd.saveACopy("path")