code: def nanmean(input, dim=None, keepdim=False, *, dtype=None, out=None):
      return ivy.nanmean(
          input, axis=dim, keepdims=keepdim, dtype=dtype, out=out
      )
  
imports: import ivy
  from ivy.func_wrapper import with_unsupported_dtypes, with_supported_dtypes
  from ivy.functional.frontends.torch.func_wrapper import to_ivy_arrays_and_back, numpy_to_torch_style_args
  from collections import namedtuple
  import ivy.functional.frontends.torch
label_desc: Use image node_id 16 for calling a global function with example usage: nanmean(input, dim, keepdim) and returns: ivy