code: def _to_ops(iterable):
      if not _is_iterable(iterable):
          return iterable
      return [_to_op(i) for i in iterable]
  
file_path: gpt-2-simple/gpt_2_simple/src/memory_saving_gradients.py
imports: from toposort import toposort
  import contextlib
  import numpy
  import tensorflow
  import time
  import sys
  from tensorflow.python.ops import gradients
label_desc: Use image node_id 9 for calling a global function with example usage: _to_ops(iterable) and returns: unknown, iterable