code: def __init__(self, shape=None, axes=None, norm=None, **kw):
      super().__init__(_shape=shape, _axes=axes, _norm=norm, **kw)
  
file_path: mars/mars/tensor/fft/rfftn.py
imports: import numpy
  from ...None import opcodes
  from ..datasource import tensor
  from .core import TensorRealFFTNMixin, validate_fftn, TensorRealFFTN
label_desc: Use image node_id 1 to create a new TensorRFFTN object from inherited base classes: TensorRealFFTN, TensorRealFFTNMixin with example: obj = TensorRFFTN(shape, axes, norm)