__init__.py 文件源码

def _create_cache(backend, **kwargs):
    try:
        # Try to get the CACHES entry for the given backend name first
        try:
            conf = settings.CACHES[backend]
        except KeyError:
            try:
                # Trying to import the given backend, in case it's a dotted path
                import_string(backend)
            except ImportError as e:
                raise InvalidCacheBackendError("Could not find backend '%s': %s" % (
                    backend, e))
            location = kwargs.pop('LOCATION', '')
            params = kwargs
        else:
            params = conf.copy()
            params.update(kwargs)
            backend = params.pop('BACKEND')
            location = params.pop('LOCATION', '')
        backend_cls = import_string(backend)
    except ImportError as e:
        raise InvalidCacheBackendError(
            "Could not find backend '%s': %s" % (backend, e))
    return backend_cls(location, params)