code: def rating_true():
      return pd.DataFrame(
          {
              DEFAULT_USER_COL: [
                  1,
                  2,
                  2,
                  2,
                  2,
                  2,
                  3,
                  3,
                  3,
                  3,
                  3,
                  3,
                  3,
                  3,
                  3,
                  3,
                  1,
                  1,
              ],
              DEFAULT_ITEM_COL: [
                  3,
                  1,
                  4,
                  5,
                  6,
                  7,
                  2,
                  5,
                  6,
                  8,
                  9,
                  10,
                  11,
                  12,
                  13,
                  14,
                  1,
                  2,
              ],
              DEFAULT_RATING_COL: [
                  3,
                  5,
                  5,
                  3,
                  3,
                  1,
                  5,
                  5,
                  5,
                  4,
                  4,
                  3,
                  3,
                  3,
                  2,
                  1,
                  5,
                  4,
              ],
          }
      )
  
file_path: recommenders/tests/unit/recommenders/evaluation/conftest.py
imports: import numpy
  import pandas
  import pytest
  from recommenders.utils.constants import DEFAULT_USER_COL, DEFAULT_ITEM_COL, DEFAULT_RATING_COL, DEFAULT_PREDICTION_COL
label_desc: Use image node_id 1 for calling a global function with example usage: rating_true() and returns: pd