code: def explicit_df_with_duplicate_user_item_pairs():
      # the first and last user-item pairs have been repeated with modified ratings.
      # other than that, this is exactly the same as ``explicit_df`` above
      return pd.DataFrame(
          data={
              "userId": [2, 2, 2, 0, 1, 0, 1, 0, 3, 3, 3],
              "itemId": [0, 0, 0, 1, 1, 0, 3, 2, 1, 1, 1],
              "rating": [1, 3, 5, 2, 3, 1, 5, 3, 1, 4, 2],
          }
      )
  
file_path: collie/tests/fixtures/utils_fixtures.py
imports: import numpy
  import pandas
  import pytest
  import torch
label_desc: Use image node_id 2 for calling a global function with example usage: explicit_df_with_duplicate_user_item_pairs() and returns: pd