code: def test_determine_data_columns(self, y, data_cols):
      df = self.df()
      assert _determine_data_columns(y=y, df=df) == data_cols
  
file_path: Pandas-Bokeh/Tests/test_utils.py
imports: import numpy
  import pandas
  import pytest
  from pandas_bokeh.plot import _determine_data_columns
label_desc: Use image node_id 2 for calling the TestDetermineDataColumns obj's underlying member method code with example usage: obj.test_determine_data_columns(y, data_cols) without return types