code: def nonify_listlist_float(
      input: List[List[float]],
  ) -> Optional[List[List[float]]]:
      if len(input) == 0:
          return None
      return input
  
imports: from typing import Any, Dict, List, Optional, Tuple
  import torch
  from pytext.torchscript.tensorizer.tensorizer import ScriptTensorizer
label_desc: Use image node_id 10 for calling a global function with example usage: nonify_listlist_float(input) and returns: input, None