code: def group_norm(input, num_groups, weight=None, bias=None, eps=1e-05):
      return ivy.group_norm(
          input,
          num_groups,
          scale=weight,
          offset=bias,
          data_format="NCS",
          eps=eps,
      )
  
imports: import ivy
  from ivy.func_wrapper import with_unsupported_dtypes
  from ivy.functional.frontends.torch.func_wrapper import to_ivy_arrays_and_back
label_desc: Use image node_id 2 for calling a global function with example usage: group_norm(input, num_groups, weight, bias, eps) and returns: ivy