Use a property to define Jsonlibrary

This is suggested/recommended at python/mypy#6002 Discovered as part of matrix-org/synapse#15052
matrix-org · Feb 15, 2023 · 20a7e94 · 20a7e94
1 parent 93eb113
commit 20a7e94
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/canonicaljson/__init__.py b/src/canonicaljson/__init__.py
@@ -52,7 +52,9 @@ def __call__(self, *args: Any, **kwargs: Any) -> "Encoder":
 
 
 class JsonLibrary(Protocol):
-    JSONEncoder: Encoder
+    @property
+    def JSONEncoder(self) -> Encoder:
+        pass
 
 
 # Declare these in the module scope, but they get configured in