code: def _get_aws_credentials():
      """
      Returns the values stored in the AWS credential environment variables.
      Returns the value stored in the AWS_ACCESS_KEY_ID environment variable and
      the value stored in the AWS_SECRET_ACCESS_KEY environment variable.
  
      Returns
      -------
      out : tuple [string]
          The first string of the tuple is the value of the AWS_ACCESS_KEY_ID
          environment variable. The second string of the tuple is the value of the
          AWS_SECRET_ACCESS_KEY environment variable.
  
      Examples
      --------
      >>> turicreate.aws.get_credentials()
      ('RBZH792CTQPP7T435BGQ', '7x2hMqplWsLpU/qQCN6xAPKcmWo46TlPJXYTvKcv')
      """
  
      if not "AWS_ACCESS_KEY_ID" in _os.environ:
          raise KeyError(
              "No access key found. Please set the environment variable AWS_ACCESS_KEY_ID."
          )
      if not "AWS_SECRET_ACCESS_KEY" in _os.environ:
          raise KeyError(
              "No secret key found. Please set the environment variable AWS_SECRET_ACCESS_KEY."
          )
      return (
          _os.environ["AWS_ACCESS_KEY_ID"],
          _os.environ["AWS_SECRET_ACCESS_KEY"],
      )
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import os
  import urllib
  import re
  import itertools
  import uuid
  import datetime
  import sys
  from ._sframe_generation import generate_random_sframe
  from ._sframe_generation import generate_random_regression_sframe
  from ._sframe_generation import generate_random_classification_sframe
  from ._type_checks import _raise_error_if_not_of_type
  from ._type_checks import _is_non_string_iterable
  from ._progress_table_printer import ProgressTablePrinter
label_desc: Use image node_id 3 for calling a global function with example usage: _get_aws_credentials() and returns: _os,  _os