code: def __round__(self, ndigits=0):
      return self._with_data(
          np.around(self._deduped_data(), decimals=ndigits)
      )
  
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 6 for calling the _data_matrix obj's underlying member method code with example usage: obj.__round__(ndigits) and returns: self