Getting ListFields from Autocad DWG using ArcPy?

Question

I am trying to get LisfFields from AutoCad DWG, to arcpy Add-In, i have tried

 mxd = arcpy.mapping.MapDocument("CURRENT")
 Layers = arcpy.mapping.ListLayers(mxd)
 for Layers in Layers:
 if Layers.name==Target_Layer:
 fieldList = arcpy.ListFields(Target_Layer)
 for field in fieldList:
 fieldName=str(field.name)

It works for Feature Class Layers but not for DWG.

Is there other way to do this?

I have also tried MakeFeatureLayer before LisfFields and it did not work.

• Baltok: I think you may have to convert your DWG to a Feature Class in order to access that information. ArcMap has limited functionality with DWGs.

Answer 1

As indicated in the help for ListFields (arcpy) that ArcPy function:

Lists the fields in a feature class, shapefile, or table in a specified dataset. The returned list can be limited with search criteria for name and field type and will contain field objects.

Consequently, as commented by @Baltok, I think you will need to convert your CAD drawing to a feature class before using ListFields on it.

One tool that should be able to do this is CAD to Geodatabase (Conversion) which:

Reads a CAD dataset and creates feature classes of the drawing. The feature classes are written to a geodatabase feature dataset.