code: def four_level_index_dataframe():
      arr = np.array(
          [
              [-0.5109, -2.3358, -0.4645, 0.05076, 0.364],
              [0.4473, 1.4152, 0.2834, 1.00661, 0.1744],
              [-0.6662, -0.5243, -0.358, 0.89145, 2.5838],
          ]
      )
      index = MultiIndex(
          levels=[
              ["a", "x"],
              ["b", "q"],
              [10.0032, 20.0, 30.0],
              [3, 4, 5],
          ],
          codes=[[0, 0, 1], [0, 1, 1], [0, 1, 2], [2, 1, 0]],
          names=["one", "two", "three", "four"],
      )
      return DataFrame(arr, index=index, columns=list("ABCDE"))
  
imports: import re
  import numpy
  import pytest
  from pandas.errors import SettingWithCopyError
  from pandas import DataFrame, Index, IndexSlice, MultiIndex, Series, concat
  import pandas._testing
  from pandas.tseries.offsets import BDay
label_desc: Use image node_id 1 for calling a global function with example usage: four_level_index_dataframe() and returns: DataFrame