access to feature class via feature dataset (Model Builder or Python)

Question

hi arcgis community,
I have a file geodatabase that has different feature datasets and each feature dataset contains different feature classes. I would like to have a certain process automatically run on each feature class. i don't know how to access each feature class. because with a for loop I can only read my feature dataset.

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DominicRobergeIADOT · Answer

try this:

for dataset in arcpy.ListDatasets("", "Feature"):
 print (dataset)
 for fc in arcpy.ListFeatureClasses(feature_dataset=dataset):
     print("     " +fc)

JayantaPoddar · Answer

In Model Builder, use Iterate Feature Classes (ModelBuilder)—ArcGIS Pro | Documentation

Check Recursive option as well.