code: def append_zero(x):
      return torch.cat([x, x.new_zeros([1])])
  
imports: import math
  import torch
  import torchsde
  from scipy import integrate
  from torch import nn
  from torchdiffeq import odeint
  from tqdm.auto import tqdm, trange
label_desc: Use image node_id 1 for calling a global function with example usage: append_zero(x) and returns: torch