made fastapi tools

python/fastapi_tools/db.py

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+"""FastAPI dependencies."""
+
+from __future__ import annotations
+
+from typing import TYPE_CHECKING, Annotated
+
+from fastapi import Depends, Request
+from sqlalchemy.orm import Session
+
+if TYPE_CHECKING:
+    from collections.abc import Iterator
+
+
+def get_db(request: Request) -> Iterator[Session]:
+    """Get database session from app state."""
+    with Session(request.app.state.engine) as session:
+        yield session
+
+
+DbSession = Annotated[Session, Depends(get_db)]