Make ruff happy (#757)

* Make ruff happy

This should not be necessary. See #756

* make ruff happy

src/oaklib/io/streaming_writer.py

@@ -1,7 +1,6 @@
 import atexit
 import logging
 import sys
-from abc import ABC
 from dataclasses import dataclass, field
 from typing import Any, ClassVar, Dict, Iterable, List, Mapping, Optional, Type, Union
 
@@ -20,7 +19,7 @@
 
 
 @dataclass
-class StreamingWriter(ABC):
+class StreamingWriter:
     """
     Base class for streaming writers.
     """

src/oaklib/utilities/publication_utils/pubdb_wrapper.py

@@ -1,4 +1,4 @@
-from abc import ABC
+from abc import ABC, abstractmethod
 from dataclasses import dataclass, field
 from typing import ClassVar, Dict, List, Optional
 
@@ -32,5 +32,6 @@ def set_cache(self, name: str) -> None:
         self.session = requests_cache.CachedSession(name)
         self._uses_cache = True
 
+    @abstractmethod
     def objects_by_ids(self, object_ids: List[str]) -> List[Dict]:
         raise NotImplementedError