code: def convert_pad_shape(pad_shape):
      l = pad_shape[::-1]
      pad_shape = [item for sublist in l for item in sublist]
      return pad_shape
  
imports: import math
  import torch
  from torch import nn
  from TTS.tts.layers.glow_tts.glow import WN
  from TTS.tts.layers.glow_tts.transformer import RelativePositionTransformer
  from TTS.tts.utils.helpers import sequence_mask
label_desc: Use image node_id 1 for calling a global function with example usage: convert_pad_shape(pad_shape) and returns: pad_shape