code: def get_degree_norm(degree):
      """calculate degree normalization"""
      degree = paddle.cast(degree, dtype="float32")
      norm = paddle.clip(degree, min=1.0)
      norm = paddle.pow(norm, -0.5)
      norm = paddle.reshape(norm, [-1, 1])
      return norm
  
imports: import os
  import sys
  import math
  import time
  import numpy
  import pickle
  import paddle
  import paddle.fluid
  import paddle.fluid.layers
  import paddle.static
  from paddle.common_ops_import import LayerHelper, check_type, check_variable_and_dtype
  from paddle.fluid.framework import Variable
  import pgl
  from pgl.utils.logger import log
label_desc: Use image node_id 11 for calling a global function with example usage: get_degree_norm(degree) and returns: norm