class_docstr: Stores an adjacency list in one contiguous numpy array in a format similar
  to a ragged tensor (https://www.tensorflow.org/guide/ragged_tensor).
class_docstr_tok: ["Stores","an","adjacency","list","in","one","contiguous","numpy","array","in","a","format","similar","to","a","ragged","tensor","(","https",":","\/\/www.tensorflow.org\/guide\/ragged_tensor",")","."]
code: def items(self):
      for idx in range(len(self.splits) - 1):
          yield (idx, self[idx])
  
imports: import itertools
  from collections import defaultdict
  import numpy
  import pandas
  import scipy.sparse
  from ..globalvar import SOURCE, TARGET, WEIGHT, TYPE_ATTR_NAME
  from .validation import require_dataframe_has_columns, comma_sep
label_desc: Use image node_id 3 for calling the FlatAdjacencyList obj's underlying member method code with example usage: obj.items() without return types