code: def dependency_sets(self):
      d_sets = []
      visited = set()
      for nodename in self.dependency:
          if nodename in visited:
              continue
          d_sets.append(self.dependency[nodename])
      return d_sets
  
imports: import csv
  import logging
label_desc: Use image node_id 3 for calling the CatPaddingDependency obj's underlying member method code with example usage: obj.dependency_sets() and returns: d_sets