config.py 文件源码

def load(filename=DEFAULT_CONFIG_FILE, stage=None):
    ''' Load the configuration and return it. '''
    try:
        # pass
        file_contents = fs.read(filename)
        resolve_dotenv_file(os.path.dirname(filename), stage)

        # Expand the environment variables used in the yaml config.
        loaded_config = os.path.expandvars(file_contents)

        # Parse the yaml configuration.
        # And merge it with the defaults before it's used everywhere.
        loaded_config = yaml.load(loaded_config)
        merged_config = merge_config(loaded_config)

        _config.update(merged_config)

        return get()

    except KeyError:
        halt('Invalid configuration file "{}"'.format(filename))

    except IOError:
        halt('Error loading config file "%s"' % filename)