I am trying to add a field to a specific number of feature classes, the names of the feature classes are Pumpcapacities_1, Pump capacities_2, Pump capacities_3.

Each one of these feature classes are located in the same geodatabase, my idea was to use arcpy.ListFeatureClasses("Pump*","Point") in order to select only the feature classes that start with Pump. But it's not working, each one of those feature classes are in a different feature dataset.

[![enter image description here][1]][1]

import arcpy
arcpy.env.workspace = r"C:\Users\mviera\Documents\CWADigitizeSchemaWorking.gdb"
Feature = arcpy.ListFeatureClasses("Pump*","Point")
for dataset in Feature
    arcpy.AddField_management(dataset, "INDPumpCapacity","TEXT",50,"","","IND Pump Capacity","NULLABLE","NON_REQUIRED")
    print dataset 
  • Welcome to GIS SE! As a new user please take the tour to learn about our focused Q&A format. A question asking for help with code should include a tested code attempt, as text rather than an image, with details about what happens when you run the code. Please edit your question to replace your image with a text code snippet.
    – Midavalo
    Mar 17, 2017 at 14:17

2 Answers 2


Instead of using arcpy.ListFeatureClasses, since you already know the feature classes which you want to add a field to, you can just create a list which stores their names and iterate through the list:

import arcpy
arcpy.env.workspace = "C:\\Users\\mviera\\Documents\\CWADigitizeSchemaWorking.gdb"
FcList = ["Pumpcapacities_1", 
          "Pump capacities_2", 
          "Pump capacities_3"]
for fc in FcList:
    arcpy.management.AddField(fc,"INDPumpCapacity","TEXT",50,"","","IND Pump Capacity", "NULLABLE", "NON_REQUIRED")
    print fc
  • Great, my pleasure.
    – atxgis
    Mar 17, 2017 at 14:54

You need to loop through your Feature Datasets first.

import arcpy
arcpy.env.workspace = r"C:\Users\mviera\Documents\CWADigitizeSchemaWorking.gdb"

datasets = arcpy.ListDatasets(feature_type = 'Feature')
datasets = [''] + datasets if datasets is not None else []

for ds in datasets:
    Feature = arcpy.ListFeatureClasses("Pump*", "Point", ds)
    for fc in Feature:
        arcpy.AddField_management(fc, "INDPumpCapacity", "TEXT", 50, "", "", "IND Pump Capacity")
        print fc

This was based on the code sample at the bottom of ListFeatureClasses - ArcGIS Desktop help


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.