class_docstr: Abstract base class of calibrators
  Args:
      num_bits: An integer. Number of bits of quantization.
      axis: A tuple. see QuantDescriptor.
      unsigned: A boolean. using unsigned quantization.
  
  Readonly Properties:
      axis:
class_docstr_tok: ["Abstract","base","class","of","calibrators","Args",":","num_bits",":","An","integer",".","Number","of","bits","of","quantization",".","axis",":","A","tuple",".","see","QuantDescriptor",".","unsigned",":","A","boolean",".","using","unsigned","quantization",".","Readonly","Properties",":","axis",":"]
code: def __init__(self, num_bits, axis, unsigned):
      self._num_bits = num_bits
      self._axis = axis
      self._unsigned = unsigned
  
label_desc: Use image node_id 1 to create a new _Calibrator object  with example: obj = _Calibrator(num_bits, axis, unsigned)