How to use the awsume.awsumepy.lib.constants function in awsume

def test_get_aws_files():
    args = argparse.Namespace(config_file=None, credentials_file=None)
    config = {}

    config_file, credentials_file = aws_files.get_aws_files(args, config)

    assert config_file == str(Path(constants.DEFAULT_CONFIG_FILE))
    assert credentials_file == str(Path(constants.DEFAULT_CREDENTIALS_FILE))

def test_get_aws_files():
    args = argparse.Namespace(config_file=None, credentials_file=None)
    config = {}

    config_file, credentials_file = aws_files.get_aws_files(args, config)

    assert config_file == str(Path(constants.DEFAULT_CONFIG_FILE))
    assert credentials_file == str(Path(constants.DEFAULT_CREDENTIALS_FILE))

def write_config(config: dict):
    if not os.path.exists(str(constants.AWSUME_DIR)):
        os.makedirs(str(constants.AWSUME_DIR))
    if not os.path.isfile(str(constants.AWSUME_CONFIG)):
        open(str(constants.AWSUME_CONFIG), 'a').close()

    try:
        yaml.safe_dump(config, open(str(constants.AWSUME_CONFIG), 'w'), width=1000)
    except Exception as e:
        safe_print('Unable to write config: {}'.format(e), colorama.Fore.RED)

def load_config() -> dict:
    if not os.path.exists(str(constants.AWSUME_DIR)):
        os.makedirs(str(constants.AWSUME_DIR))
    if not os.path.isfile(str(constants.AWSUME_CONFIG)):
        open(str(constants.AWSUME_CONFIG), 'a').close()

    options = None
    try:
        options = yaml.safe_load(open(str(constants.AWSUME_CONFIG), 'r'))
    except Exception as e:
        raise exceptions.ConfigParseException(constants.AWSUME_CONFIG, message='Cannot parse config file', error=e)
    if options is None:
        options = defaults
        write_config(options)
    return options

config_file = os.environ.get('AWS_CONFIG_FILE')
    elif args and args.config_file:
        config_file = args.config_file
    elif config and config.get('config-file'):
        config_file = config.get('config-file')
    else:
        config_file = constants.DEFAULT_CONFIG_FILE

    if os.environ.get('AWS_SHARED_CREDENTIALS_FILE'):
        credentials_file = os.environ.get('AWS_SHARED_CREDENTIALS_FILE')
    elif args and  args.credentials_file:
        credentials_file = args.credentials_file
    elif config and config.get('credentials-file'):
        credentials_file = config.get('credentials-file')
    else:
        credentials_file = constants.DEFAULT_CREDENTIALS_FILE

    return str(Path(config_file)), str(Path(credentials_file))

def ensure_cache_dir():
    cache_dir = str(constants.AWSUME_CACHE_DIR)
    if not os.path.exists(cache_dir):
        os.makedirs(cache_dir)
    os.chmod(cache_dir, 0o700) #ensure directory is secure.

def load_config() -> dict:
    if not os.path.exists(str(constants.AWSUME_DIR)):
        os.makedirs(str(constants.AWSUME_DIR))
    if not os.path.isfile(str(constants.AWSUME_CONFIG)):
        open(str(constants.AWSUME_CONFIG), 'a').close()

    options = None
    try:
        options = yaml.safe_load(open(str(constants.AWSUME_CONFIG), 'r'))
    except Exception as e:
        raise exceptions.ConfigParseException(constants.AWSUME_CONFIG, message='Cannot parse config file', error=e)
    if options is None:
        options = defaults
        write_config(options)
    return options

def get_aws_files(args: argparse.Namespace, config: dict) -> tuple:
    if os.environ.get('AWS_CONFIG_FILE'):
        config_file = os.environ.get('AWS_CONFIG_FILE')
    elif args and args.config_file:
        config_file = args.config_file
    elif config and config.get('config-file'):
        config_file = config.get('config-file')
    else:
        config_file = constants.DEFAULT_CONFIG_FILE

    if os.environ.get('AWS_SHARED_CREDENTIALS_FILE'):
        credentials_file = os.environ.get('AWS_SHARED_CREDENTIALS_FILE')
    elif args and  args.credentials_file:
        credentials_file = args.credentials_file
    elif config and config.get('credentials-file'):
        credentials_file = config.get('credentials-file')
    else:
        credentials_file = constants.DEFAULT_CREDENTIALS_FILE

    return str(Path(config_file)), str(Path(credentials_file))

def write_config(config: dict):
    if not os.path.exists(str(constants.AWSUME_DIR)):
        os.makedirs(str(constants.AWSUME_DIR))
    if not os.path.isfile(str(constants.AWSUME_CONFIG)):
        open(str(constants.AWSUME_CONFIG), 'a').close()

    try:
        yaml.safe_dump(config, open(str(constants.AWSUME_CONFIG), 'w'), width=1000)
    except Exception as e:
        safe_print('Unable to write config: {}'.format(e), colorama.Fore.RED)

def write_aws_cache(cache_file_name: str, session: dict) -> dict:
    ensure_cache_dir()
    cache_path = str(constants.AWSUME_CACHE_DIR) + '/' + cache_file_name
    if os.path.exists(cache_path):
        os.chmod(cache_path, 0o600)
    else:
        open(cache_path, 'a').close()
        os.chmod(cache_path, 0o600)
    logger.debug('Cache file path: ' + cache_path)
    expiration = session['Expiration'].astimezone(dateutil.tz.tzlocal())
    expiration = expiration.strftime('%Y-%m-%d %H:%M:%S')
    try:
        json.dump({
            **session,
            'Expiration': expiration,
        }, open(cache_path, 'w'), indent=2, default=str)
    except:
        logger.debug('There was an error writing to the cache file', exc_info=True)
    session['Expiration'] = datetime.strptime(expiration, '%Y-%m-%d %H:%M:%S')