def __init__(self, config_file=None):
        self.config = DEFAULTS.copy()
        filenames = [] if LOCAL_MODE else [GLOBAL_CONFIG, USER_CONFIG]
        if config_file:
            filenames.append(config_file)
        for filename in filenames:
            if os.path.exists(filename):
                if filename != config_file:
                    msg = ("Using global/system git-review config files (%s) "
                           "is deprecated")
                    print(msg % filename)
                self.config.update(load_config_file(filename))
dataset/ETHPy150Open openstack-infra/git-restack/git_restack/cmd.py/Config.__init__/original