diff --git a/synapse/util/caches/dictionary_cache.py b/synapse/util/caches/dictionary_cache.py
index 5eaf70c7ab..2fbc7b1e6c 100644
--- a/synapse/util/caches/dictionary_cache.py
+++ b/synapse/util/caches/dictionary_cache.py
@@ -14,7 +14,7 @@
import enum
import logging
import threading
-from typing import Any, Dict, Generic, Iterable, Optional, Set, Tuple, TypeVar, Union
+from typing import Dict, Generic, Iterable, Optional, Set, Tuple, TypeVar, Union
import attr
from typing_extensions import Literal
@@ -33,10 +33,8 @@ DKT = TypeVar("DKT")
DV = TypeVar("DV")
-# This class can't be generic because it uses slots with attrs.
-# See: https://github.com/python-attrs/attrs/issues/313
@attr.s(slots=True, frozen=True, auto_attribs=True)
-class DictionaryEntry: # should be: Generic[DKT, DV].
+class DictionaryEntry(Generic[DKT, DV]):
"""Returned when getting an entry from the cache
If `full` is true then `known_absent` will be the empty set.
@@ -50,8 +48,8 @@ class DictionaryEntry: # should be: Generic[DKT, DV].
"""
full: bool
- known_absent: Set[Any] # should be: Set[DKT]
- value: Dict[Any, Any] # should be: Dict[DKT, DV]
+ known_absent: Set[DKT]
+ value: Dict[DKT, DV]
def __len__(self) -> int:
return len(self.value)
|
