code: def __init__(self):
      spmatrix.__init__(self)
  
imports: import numpy
  from .base import spmatrix, _ufuncs_with_fixed_point_at_zero
  from .sputils import isscalarlike, validateaxis, matrix
label_desc: Use image node_id 1 to create a new _data_matrix object from inherited base classes: spmatrix with example: obj = _data_matrix()