arcgis python try异常处理

try:
    # Execute the Buffer tool
    #
    arcpy.Buffer_analysis("c:/transport/roads.shp", "c:/transport/roads_buffer.shp")
except Exception as e:
    print e.message
   
    # If using this code within a script tool, AddError can be used to return messages
    #   back to a script tool.  If not, AddError will have no effect.
    arcpy.AddError("gisoracle错误:"+e.message)