fix: syn

evmspec/data/_main.py

@@ -340,7 +340,7 @@ def __new__(cls, v):
         try:
             missing_bytes = _MISSING_BYTES[len(input_bytes)]
         except KeyError as e:
-            raise ValueError(f"{v} is too long: {len(input_bytes)") from e.__cause__
+            raise ValueError(f"{v} is too long: {len(input_bytes)}") from e.__cause__
 
         return __hb_new__(cls, missing_bytes + input_bytes)