code: def __init__(self, onnx_node, run_params):  # type: ignore
      OpRunUnaryNum.__init__(self, onnx_node, run_params)
      self.vf = np.vectorize(sigmoid)
  
imports: import numpy
  from onnx.reference.ops._op import OpRunUnaryNum
label_desc: Use image node_id 1 to create a new Sigmoid object from inherited base classes: OpRunUnaryNum with example: obj = Sigmoid(onnx_node, run_params)