code: def __init__(self, mean, sigma):
      self.mean = mean
      self.sigma = SvdArray(sigma)
  
imports: import math
  import numpy
  from scipy import linalg, stats, special
  from .linalg_decomp_1 import SvdArray
label_desc: Use image node_id 1 to create a new MultivariateNormal object  with example: obj = MultivariateNormal(mean, sigma)