code: def append_dims(x, n):
      return x[(Ellipsis, *(None,) * (n - x.ndim))]
  
imports: import math
  from dataclasses import dataclass
  from functools import partial
  import paddle
  import paddle.nn
label_desc: Use image node_id 1 for calling a global function with example usage: append_dims(x, n) and returns: x