text: # Copyright 2018 Amazon.com, Inc. or its affiliates. All Rights Reserved.
  #
  # Licensed under the Apache License, Version 2.0 (the "License"). You
  # may not use this file except in compliance with the License. A copy of
  # the License is located at
  #
  # http://aws.amazon.com/apache2.0/
  #
  # or in the "license" file accompanying this file. This file is
  # distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF
  # ANY KIND, either express or implied. See the License for the specific
  # language governing permissions and limitations under the License.
  """Helper functions for consistently obtaining str and bytes objects in both Python2 and Python3.
  
  .. warning::
      No guarantee is provided on the modules and APIs within this
      namespace staying consistent. Directly reference at your own risk.
  """
  import codecs
  
  import six
  
  from dynamodb_encryption_sdk.internal.identifiers import TEXT_ENCODING
  
  __all__ = ("to_str", "to_bytes")
  
  
  def to_str(data):
      """Takes an input str or bytes object and returns an equivalent str object.
  
      :param data: Input data
      :type data: str or bytes
      :returns: Data normalized to str
      :rtype: str
      """
      if isinstance(data, bytes):
          return codecs.decode(data, TEXT_ENCODING)
      return data
  
  
  def to_bytes(data):
      """Takes an input str or bytes object and returns an equivalent bytes object.
  
      :param data: Input data
      :type data: str or bytes
      :returns: Data normalized to bytes
      :rtype: bytes
      """
      if isinstance(data, six.string_types) and not isinstance(data, bytes):
          return codecs.encode(data, TEXT_ENCODING)
      return data
  