configuration.py 文件源码

def __init__(self, isolated, load_only=None):
        # type: (bool, Kind) -> None
        super(Configuration, self).__init__()

        _valid_load_only = [kinds.USER, kinds.GLOBAL, kinds.VENV, None]
        if load_only not in _valid_load_only:
            raise ConfigurationError(
                "Got invalid value for load_only - should be one of {}".format(
                    ", ".join(map(repr, _valid_load_only[:-1]))
                )
            )
        self.isolated = isolated  # type: bool
        self.load_only = load_only  # type: Optional[Kind]

        # The order here determines the override order.
        self._override_order = [
            kinds.GLOBAL, kinds.USER, kinds.VENV, kinds.ENV, kinds.ENV_VAR
        ]

        self._ignore_env_names = ["version", "help"]

        # Because we keep track of where we got the data from
        self._parsers = {
            variant: [] for variant in self._override_order
        }  # type: Dict[Kind, List[Tuple[str, RawConfigParser]]]
        self._config = {
            variant: {} for variant in self._override_order
        }  # type: Dict[Kind, Dict[str, Any]]
        self._modified_parsers = []  # type: List[Tuple[str, RawConfigParser]]