why there is no attribute like 'GetNAClassNames' in my arcpy

[المشرف العام]

I want to do a network analysis, when I want to load a layer as a barrier using arcpy.na.GetNAClassNames, the message is like this:AttributeError: 'module' object has no attribute 'GetNAClassNames'why?my current version is arcGIS 10.3



أكثر...