def _validate_config_file(config_file):
    if not os.path.exists(config_file):
        raise ConfigurationError("Specified configuration file not"
                                 " found: {0}".format(config_file))
    if not os.path.isfile(config_file):
        raise ConfigurationError("Specified configuration file is not"
                                 " a file: {0}".format(config_file))
Find linear prediction filter using the Total Least Squares method
dataset/ETHPy150Open Yelp/pyleus/pyleus/configuration.py/_validate_config_file--crossover with--dataset/ETHPy150Open jjhelmus/nmrglue/nmrglue/process/proc_lp.py/find_lpc_tls