サマリー
The Describe function returns the Workspace property group for folders.
For a folder, the Describe dataType property returns a value of "Folder".
コードのサンプル
The following stand-alone script displays some properties for a folder:
import arcpy
# Create a Describe object
#
desc = arcpy.Describe("C:/data")
# Print the dataType and a workspace property
#
print("Data Type: " + desc.dataType)
print("Workspace Type: " + desc.workspaceType)