code: def get_variable_to_dtype_map(self):
      return {
          name: dtypes.DType(type_enum)
          for name, type_enum in self._GetVariableToDataTypeMap().items()  # pylint: disable=protected-access
      }
  
file_path: tensorflow/tensorflow/python/training/py_checkpoint_reader.py
imports: from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors_impl
  from tensorflow.python.util import compat
  from tensorflow.python.util._pywrap_checkpoint_reader import CheckpointReader
  from tensorflow.python.util.tf_export import tf_export
label_desc: Use image node_id 2 for calling a global function with example usage: get_variable_to_dtype_map() and returns: unknown