Python config loader

configloader.py

import imp


class ConfigLoader(object):
    def __init__(self):
        self.__conf = None

    def load_file(self, path):
        assert self.__conf is None
        if self.__conf is None:
            self.__conf = imp.load_source('config', path)
        return self.__conf

    def load_object(self, obj):
        assert self.__conf is None
        if self.__conf is None:
            self.__conf = obj
        return self.__conf

    def __getattr__(self, item):
        return getattr(self.__conf, item)

conf = ConfigLoader()