code: def naive_nested_from_flat_dictionary(flat_dict, sep="/"):
      """A naive conversion of a flat dictionary with '/'-separated keys signifying nesting
      into a nested dictionary.
      """
      return {
          sub_prefix: (
              bucket[0][1]
              if (len(bucket) == 1 and sub_prefix == bucket[0][0])
              else naive_nested_from_flat_dictionary(
                  {
                      k[len(sub_prefix) + 1 :]: v
                      for k, v in bucket
                      if len(k) > len(sub_prefix)
                  },
                  sep=sep,
              )
          )
          for sub_prefix, bucket in (
              (key, list(group))
              for key, group in itertools.groupby(
                  sorted(flat_dict.items()),
                  key=lambda item: item[0].partition(sep)[0],
              )
          )
      }
  
imports: import itertools
  import json
  from copy import copy
  from logging import getLogger
  import six
  import yaml
label_desc: Use image node_id 8 for calling a global function with example usage: naive_nested_from_flat_dictionary(flat_dict, sep) and returns: unknown