code: def __init__(self, exponent):
      super(Envelope, self).__init__()
      self.p = exponent + 1
      self.a = -(self.p + 1) * (self.p + 2) / 2
      self.b = self.p * (self.p + 2)
      self.c = -self.p * (self.p + 1) / 2
  
imports: import numpy
  import torch
  from scipy.optimize import brentq
  from scipy import special
  from math import pi
label_desc: Use image node_id 1 to create a new Envelope object from inherited base classes: torch.nn with example: obj = Envelope(exponent)