fix linting

src/example_store/__init__.py

@@ -1,4 +1,6 @@
 # SPDX-FileCopyrightText: 2023-present John Doe <jd@example.com>
 #
 # SPDX-License-Identifier: Apache-2.0
-from .document_store import ExampleDocumentStore
+from example_store.document_store import ExampleDocumentStore
+
+__all__ = ["ExampleDocumentStore"]

src/example_store/document_store.py

@@ -1,14 +1,13 @@
 # SPDX-FileCopyrightText: 2023-present John Doe <jd@example.com>
 #
 # SPDX-License-Identifier: Apache-2.0
-from typing import Any, Dict, List, Optional
-
 import logging
+from typing import Any, Dict, List, Optional
 
-from haystack.preview.document_stores.decorator import document_store
 from haystack.preview.dataclasses import Document
-from haystack.preview.document_stores.protocols import DuplicatePolicy
+from haystack.preview.document_stores.decorator import document_store
 from haystack.preview.document_stores.errors import DuplicateDocumentError, MissingDocumentError
+from haystack.preview.document_stores.protocols import DuplicatePolicy
 
 logger = logging.getLogger(__name__)
 
@@ -33,7 +32,7 @@ def count_documents(self) -> int:
         """
         return 0  # FIXME
 
-    def filter_documents(self, filters: Optional[Dict[str, Any]] = None) -> List[Document]:
+    def filter_documents(self, _: Optional[Dict[str, Any]] = None) -> List[Document]:
         """
         Returns the documents that match the filters provided.
 
@@ -131,4 +130,5 @@ def delete_documents(self, document_ids: List[str]) -> None:
         :param object_ids: the object_ids to delete
         """
         for doc_id in document_ids:  # FIXME
-            raise MissingDocumentError(f"ID '{doc_id}' not found, cannot delete it.")
+            msg = f"ID '{doc_id}' not found, cannot delete it."
+            raise MissingDocumentError(msg)

src/example_store/retriever.py

@@ -1,7 +1,7 @@
 # SPDX-FileCopyrightText: 2023-present John Doe <jd@example.com>
 #
 # SPDX-License-Identifier: Apache-2.0
-from typing import Dict, Any, Optional
+from typing import Any, Dict, Optional
 
 from haystack.preview import component
 
@@ -29,7 +29,7 @@ def __init__(self, document_store: ExampleDocumentStore, filters: Optional[Dict[
         self.top_k = top_k
         self.document_store = document_store
 
-    def run(self, data):
+    def run(self, _):
         """
         Run the Retriever on the given input data.