flask.py 文件源码

def web_config(self) -> typing.Mapping[str, object]:
        """(:class:`typing.Mapping`) The configuration maping for
        web that will go to :attr:`flask.Flask.config <Flask.config>`.

        """
        web_config = self.config.get('web', {})
        if not isinstance(web_config, collections.abc.Mapping):
            web_config = {}
        return ImmutableDict((k.upper(), v) for k, v in web_config.items())