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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def _read_conf_file(path):
    '''
    Read in a config file from a given path and process it into a dictionary
    '''
    log.debug('Reading configuration from %s', path)
    with salt.utils.files.fopen(path, 'r') as conf_file:
        try:
            conf_opts = salt.utils.yaml.safe_load(conf_file) or {}
        except salt.utils.yaml.YAMLError as err:
            message = 'Error parsing configuration file: {0} - {1}'.format(path, err)
            log.error(message)
            raise salt.exceptions.SaltConfigurationError(message)

        # only interpret documents as a valid conf, not things like strings,
        # which might have been caused by invalid yaml syntax
        if not isinstance(conf_opts, dict):
            message = 'Error parsing configuration file: {0} - conf ' \
                      'should be a document, not {1}.'.format(path, type(conf_opts))
            log.error(message)
            raise salt.exceptions.SaltConfigurationError(message)

        # allow using numeric ids: convert int to string
        if 'id' in conf_opts:
            if not isinstance(conf_opts['id'], six.string_types):
                conf_opts['id'] = six.text_type(conf_opts['id'])
            else:
                conf_opts['id'] = salt.utils.data.decode(conf_opts['id'])
        return conf_opts