code: def setup(self):
      N = 10000
      k = 10
      arr = np.zeros((N, k), dtype=float)
      arr[0, 0] = 3.0
      arr[12, 7] = -1.0
      arr[0, 9] = 11.2
      self.df = pd.DataFrame(
          arr, dtype=pd.SparseDtype("float", fill_value=0.0)
      )
  
imports: import numpy
  import scipy.sparse
  import pandas
  from pandas import MultiIndex, Series, date_range
  from pandas.arrays import SparseArray
  from .pandas_vb_common import setup
label_desc: Use image node_id 1 for calling the ToCooFrame obj's underlying member method code with example usage: obj.setup() without return types