versioning.py 文件源码

def determine_version(self, request, *args, **kwargs):
        resolver_match = getattr(request, 'resolver_match', None)
        if (resolver_match is None or not resolver_match.namespace):
            return self.default_version
        version = resolver_match.namespace
        if not self.is_allowed_version(version):
            raise exceptions.NotFound(self.invalid_version_message)
        return version