resource.py 文件源码

def resolve(self, uri, from_resource=None):
        upath = Resource.normalize(uri)
        uri_str, fragment = upath.rsplit('#', maxsplit=1)
        if uri_str in self.resources:
            return Resource._navigate_from(fragment, self.resources[uri_str])
        start = from_resource.uri.normalize() if from_resource else '.'
        apath = path.dirname(start)
        uri = URI(path.join(apath, uri_str))
        epackage = self.resources[uri.normalize()]
        if isinstance(epackage, Resource):
            epackage = epackage.contents[0]
        return Resource._navigate_from(fragment, epackage)