code: def df_blank():
      return DataFrame(
          [[0, 0], [0, 0]], columns=["A", "B"], index=["X", "Y"]
      )
  
imports: import gc
  import numpy
  import pytest
  from pandas import DataFrame, IndexSlice, Series
  import matplotlib
  from pandas.io.formats.style import Styler
label_desc: Use image node_id 4 for calling a global function with example usage: df_blank() and returns: DataFrame