code: def arr_data():
      """Fixture returning numpy array with valid and missing entries"""
      return np.array(
          [np.nan, np.nan, 1, 2, 3, np.nan, 4, 5, np.nan, 6]
      )
  
imports: import re
  import numpy
  import pytest
  from pandas._libs.sparse import IntIndex
  import pandas
  from pandas import SparseDtype, isna
  import pandas._testing
  from pandas.core.arrays.sparse import SparseArray
label_desc: Use image node_id 1 for calling a global function with example usage: arr_data() and returns: np