The arcpy.Describe has an attribute isBuildable, but not the buid status.
through arcpy it is mostly about getting properties
then that leaves you with the code snippets for the network analyst tool in arctoolbox...
if a function has been implemented as a tool, then the code snippet will help. If it doesn't exist as a tool or through arcpy, it isn't available yet
By the way, is it available to create a network dataset automatically using python? I found that lots of Network Dataset properties are Read Only.
That is by design. You would have to examine the arcpy and tool model for Pro to see if that offers any further options.
Retrieving data ...