Format Python code and add Ruff tooling

main.py

@@ -9,27 +9,33 @@ from models import Todo
 
 app = FastAPI()
 app.add_middleware(
-        CORSMiddleware,
-        allow_origins=["*"],
-        allow_credentials=True,
-        allow_methods=["*"],
-        allow_headers=["*"],
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
 )
 
+
 class todocreate(BaseModel):
     task: str
 
+
 class todoupdate(BaseModel):
-    completion: bool  | None = None
+    completion: bool | None = None
     task: str | None = None
 
+
 class todoresponse(BaseModel):
     id: int
     task: str
     completion: bool
+
+
 @app.get("/health")
 def health():
-    return {"status":"ok"}
+    return {"status": "ok"}
+
 
 @app.get("/todos", response_model=list[todoresponse])
 def todos_get(session: SessionDep):
@@ -37,6 +43,7 @@ def todos_get(session: SessionDep):
     todos = session.scalars(statement).all()
     return todos
 
+
 @app.post("/todos", response_model=todoresponse)
 def todos_create(
     todo_data: todocreate,
@@ -61,7 +68,7 @@ def todos_patch(
     try:
         todo = session.get(Todo, todo_id)
         if todo is None:
-            raise HTTPException(status_code = 404, detail = "Todo not found")
+            raise HTTPException(status_code=404, detail="Todo not found")
         if update_data.task is not None:
             todo.task = update_data.task
         if update_data.completion is not None:
@@ -81,7 +88,7 @@ def todos_delete(
     try:
         todo = session.get(Todo, todo_id)
         if todo is None:
-            raise HTTPException(status_code = 404, detail = "Todo not found")
+            raise HTTPException(status_code=404, detail="Todo not found")
         session.delete(todo)
         session.commit()
         return todo