chore: apply ruff linting fixes and type annotations to memory module

Co-authored-by: Lorenze Jay <63378463+lorenzejay@users.noreply.github.com>

src/crewai/memory/__init__.py

@@ -1,11 +1,11 @@
 from .entity.entity_memory import EntityMemory
+from .external.external_memory import ExternalMemory
 from .long_term.long_term_memory import LongTermMemory
 from .short_term.short_term_memory import ShortTermMemory
-from .external.external_memory import ExternalMemory
 
 __all__ = [
     "EntityMemory",
+    "ExternalMemory",
     "LongTermMemory",
     "ShortTermMemory",
-    "ExternalMemory",
 ]

src/crewai/memory/external/external_memory_item.py

@@ -1,12 +1,12 @@
-from typing import Any, Dict, Optional
+from typing import Any
 
 
 class ExternalMemoryItem:
     def __init__(
         self,
         value: Any,
-        metadata: Optional[Dict[str, Any]] = None,
+        metadata: dict[str, Any] | None = None,
-        agent: Optional[str] = None,
+        agent: str | None = None,
     ):
         self.value = value
         self.metadata = metadata

src/crewai/memory/long_term/long_term_memory.py

@@ -1,17 +1,17 @@
-from typing import Any, Dict, List
 import time
+from typing import Any
 
-from crewai.memory.long_term.long_term_memory_item import LongTermMemoryItem
-from crewai.memory.memory import Memory
 from crewai.events.event_bus import crewai_event_bus
 from crewai.events.types.memory_events import (
-    MemoryQueryStartedEvent,
     MemoryQueryCompletedEvent,
     MemoryQueryFailedEvent,
-    MemorySaveStartedEvent,
+    MemoryQueryStartedEvent,
     MemorySaveCompletedEvent,
     MemorySaveFailedEvent,
+    MemorySaveStartedEvent,
 )
+from crewai.memory.long_term.long_term_memory_item import LongTermMemoryItem
+from crewai.memory.memory import Memory
 from crewai.memory.storage.ltm_sqlite_storage import LTMSQLiteStorage
 
 
@@ -84,7 +84,7 @@ class LongTermMemory(Memory):
         self,
         task: str,
         latest_n: int = 3,
-    ) -> List[Dict[str, Any]]:  # type: ignore # signature of "search" incompatible with supertype "Memory"
+    ) -> list[dict[str, Any]]:  # type: ignore # signature of "search" incompatible with supertype "Memory"
         crewai_event_bus.emit(
             self,
             event=MemoryQueryStartedEvent(

src/crewai/memory/long_term/long_term_memory_item.py

@@ -1,4 +1,4 @@
-from typing import Any, Dict, Optional, Union
+from typing import Any
 
 
 class LongTermMemoryItem:
@@ -8,8 +8,8 @@ class LongTermMemoryItem:
         task: str,
         expected_output: str,
         datetime: str,
-        quality: Optional[Union[int, float]] = None,
+        quality: int | float | None = None,
-        metadata: Optional[Dict[str, Any]] = None,
+        metadata: dict[str, Any] | None = None,
     ):
         self.task = task
         self.agent = agent

src/crewai/memory/short_term/short_term_memory_item.py

@@ -1,12 +1,12 @@
-from typing import Any, Dict, Optional
+from typing import Any
 
 
 class ShortTermMemoryItem:
     def __init__(
         self,
         data: Any,
-        agent: Optional[str] = None,
+        agent: str | None = None,
-        metadata: Optional[Dict[str, Any]] = None,
+        metadata: dict[str, Any] | None = None,
     ):
         self.data = data
         self.agent = agent

src/crewai/memory/storage/interface.py

@@ -1,15 +1,15 @@
-from typing import Any, Dict, List
+from typing import Any
 
 
 class Storage:
     """Abstract base class defining the storage interface"""
 
-    def save(self, value: Any, metadata: Dict[str, Any]) -> None:
+    def save(self, value: Any, metadata: dict[str, Any]) -> None:
         pass
 
     def search(
         self, query: str, limit: int, score_threshold: float
-    ) -> Dict[str, Any] | List[Any]:
+    ) -> dict[str, Any] | list[Any]:
         return {}
 
     def reset(self) -> None:

src/crewai/memory/storage/kickoff_task_outputs_storage.py

@@ -2,7 +2,7 @@ import json
 import logging
 import sqlite3
 from pathlib import Path
-from typing import Any, Dict, List, Optional
+from typing import Any
 
 from crewai.task import Task
 from crewai.utilities import Printer
@@ -18,7 +18,7 @@ class KickoffTaskOutputsSQLiteStorage:
     An updated SQLite storage class for kickoff task outputs storage.
     """
 
-    def __init__(self, db_path: Optional[str] = None) -> None:
+    def __init__(self, db_path: str | None = None) -> None:
         if db_path is None:
             # Get the parent directory of the default db path and create our db file there
             db_path = str(Path(db_storage_path()) / "latest_kickoff_task_outputs.db")
@@ -57,15 +57,15 @@ class KickoffTaskOutputsSQLiteStorage:
         except sqlite3.Error as e:
             error_msg = DatabaseError.format_error(DatabaseError.INIT_ERROR, e)
             logger.error(error_msg)
-            raise DatabaseOperationError(error_msg, e)
+            raise DatabaseOperationError(error_msg, e) from e
 
     def add(
         self,
         task: Task,
-        output: Dict[str, Any],
+        output: dict[str, Any],
         task_index: int,
         was_replayed: bool = False,
-        inputs: Dict[str, Any] | None = None,
+        inputs: dict[str, Any] | None = None,
     ) -> None:
         """Add a new task output record to the database.
 
@@ -103,7 +103,7 @@ class KickoffTaskOutputsSQLiteStorage:
         except sqlite3.Error as e:
             error_msg = DatabaseError.format_error(DatabaseError.SAVE_ERROR, e)
             logger.error(error_msg)
-            raise DatabaseOperationError(error_msg, e)
+            raise DatabaseOperationError(error_msg, e) from e
 
     def update(
         self,
@@ -138,7 +138,7 @@ class KickoffTaskOutputsSQLiteStorage:
                         else value
                     )
 
-                query = f"UPDATE latest_kickoff_task_outputs SET {', '.join(fields)} WHERE task_index = ?"  # nosec
+                query = f"UPDATE latest_kickoff_task_outputs SET {', '.join(fields)} WHERE task_index = ?"  # nosec # noqa: S608
                 values.append(task_index)
 
                 cursor.execute(query, tuple(values))
@@ -151,9 +151,9 @@ class KickoffTaskOutputsSQLiteStorage:
         except sqlite3.Error as e:
             error_msg = DatabaseError.format_error(DatabaseError.UPDATE_ERROR, e)
             logger.error(error_msg)
-            raise DatabaseOperationError(error_msg, e)
+            raise DatabaseOperationError(error_msg, e) from e
 
-    def load(self) -> List[Dict[str, Any]]:
+    def load(self) -> list[dict[str, Any]]:
         """Load all task output records from the database.
 
         Returns:
@@ -192,7 +192,7 @@ class KickoffTaskOutputsSQLiteStorage:
         except sqlite3.Error as e:
             error_msg = DatabaseError.format_error(DatabaseError.LOAD_ERROR, e)
             logger.error(error_msg)
-            raise DatabaseOperationError(error_msg, e)
+            raise DatabaseOperationError(error_msg, e) from e
 
     def delete_all(self) -> None:
         """Delete all task output records from the database.
@@ -212,4 +212,4 @@ class KickoffTaskOutputsSQLiteStorage:
         except sqlite3.Error as e:
             error_msg = DatabaseError.format_error(DatabaseError.DELETE_ERROR, e)
             logger.error(error_msg)
-            raise DatabaseOperationError(error_msg, e)
+            raise DatabaseOperationError(error_msg, e) from e

src/crewai/memory/storage/ltm_sqlite_storage.py

@@ -1,7 +1,7 @@
 import json
 import sqlite3
 from pathlib import Path
-from typing import Any, Dict, List, Optional, Union
+from typing import Any
 
 from crewai.utilities import Printer
 from crewai.utilities.paths import db_storage_path
@@ -12,9 +12,7 @@ class LTMSQLiteStorage:
     An updated SQLite storage class for LTM data storage.
     """
 
-    def __init__(
+    def __init__(self, db_path: str | None = None) -> None:
-        self, db_path: Optional[str] = None
-    ) -> None:
         if db_path is None:
             # Get the parent directory of the default db path and create our db file there
             db_path = str(Path(db_storage_path()) / "long_term_memory_storage.db")
@@ -53,9 +51,9 @@ class LTMSQLiteStorage:
     def save(
         self,
         task_description: str,
-        metadata: Dict[str, Any],
+        metadata: dict[str, Any],
         datetime: str,
-        score: Union[int, float],
+        score: int | float,
     ) -> None:
         """Saves data to the LTM table with error handling."""
         try:
@@ -75,9 +73,7 @@ class LTMSQLiteStorage:
                 color="red",
             )
 
-    def load(
+    def load(self, task_description: str, latest_n: int) -> list[dict[str, Any]] | None:
-        self, task_description: str, latest_n: int
-    ) -> Optional[List[Dict[str, Any]]]:
         """Queries the LTM table by task description with error handling."""
         try:
             with sqlite3.connect(self.db_path) as conn:
@@ -89,7 +85,7 @@ class LTMSQLiteStorage:
                     WHERE task_description = ?
                     ORDER BY datetime DESC, score ASC
                     LIMIT {latest_n}
-                """,  # nosec
+                """,  # nosec # noqa: S608
                     (task_description,),
                 )
                 rows = cursor.fetchall()
@@ -125,4 +121,4 @@ class LTMSQLiteStorage:
                 content=f"MEMORY ERROR: An error occurred while deleting all rows in LTM: {e}",
                 color="red",
             )
-        return None
+        return

src/crewai/memory/storage/rag_storage.py

@@ -1,9 +1,10 @@
 import logging
 import traceback
 import warnings
-from typing import Any
+from typing import Any, cast
 
 from crewai.rag.chromadb.config import ChromaDBConfig
+from crewai.rag.chromadb.types import ChromaEmbeddingFunctionWrapper
 from crewai.rag.config.utils import get_rag_client
 from crewai.rag.core.base_client import BaseClient
 from crewai.rag.embeddings.factory import get_embedding_function
@@ -21,8 +22,13 @@ class RAGStorage(BaseRAGStorage):
     """
 
     def __init__(
-        self, type, allow_reset=True, embedder_config=None, crew=None, path=None
+        self,
-    ):
+        type: str,
+        allow_reset: bool = True,
+        embedder_config: dict[str, Any] | None = None,
+        crew: Any = None,
+        path: str | None = None,
+    ) -> None:
         super().__init__(type, allow_reset, embedder_config, crew)
         agents = crew.agents if crew else []
         agents = [self._sanitize_role(agent.role) for agent in agents]
@@ -44,7 +50,11 @@ class RAGStorage(BaseRAGStorage):
 
         if self.embedder_config:
             embedding_function = get_embedding_function(self.embedder_config)
-            config = ChromaDBConfig(embedding_function=embedding_function)
+            config = ChromaDBConfig(
+                embedding_function=cast(
+                    ChromaEmbeddingFunctionWrapper, embedding_function
+                )
+            )
             self._client = create_client(config)
 
     def _get_client(self) -> BaseClient: