message: Preserve temporary files when verbosity is above 2. This simplifies debugging.
diff: @@ -33,6 +33,7 @@ import astor
  import gast
  from tensorflow.python.autograph.pyct import origin_info
  +from tensorflow.python.autograph.utils import ag_logging
  def ast_to_source(node, indentation=' '):
  @@ -85,7 +86,7 @@ def source_to_entity(source, delete_on_exit):
  f.write(source)
  # TODO(mdan): Try flush() and delete=False instead.
  - if delete_on_exit:
  + if delete_on_exit and ag_logging.get_verbosity() < 3:
  atexit.register(lambda: os.remove(f.name))
  return imp.load_source(module_name, f.name), f.name
  