code: def explicit_df():
      return pd.DataFrame(
          data={
              "userId": [2, 0, 1, 0, 1, 0, 3],
              "itemId": [0, 1, 1, 0, 3, 2, 1],
              "rating": [1, 2, 3, 1, 5, 3, 4],
          }
      )
  
file_path: collie/tests/fixtures/utils_fixtures.py
imports: import numpy
  import pandas
  import pytest
  import torch
label_desc: Use image node_id 1 for calling a global function with example usage: explicit_df() and returns: pd