code: def norm(input, axis):
      return ivy.sqrt(ivy.sum(ivy.square(input), axis=axis))
  
imports: import ivy
  import ivy.functional.frontends.torch
  from ivy.functional.frontends.torch.func_wrapper import to_ivy_arrays_and_back
  from ivy.func_wrapper import with_unsupported_dtypes, with_supported_dtypes
label_desc: Use image node_id 21 for calling a global function with example usage: norm(input, axis) and returns: ivy