Update app.py

app.py

@@ -73,7 +73,7 @@ def load_models():
 @app.post("/forecast", response_model=ForecastResponse)
 def forecast(req: ForecastRequest):
     if not req.transactions:
-        raise HTTPException(status_code=400, detail="transactions is empty")
+        raise HTTPException(400, "transactions is empty")
 
     df = pd.DataFrame([t.dict() for t in req.transactions])
 
@@ -87,9 +87,7 @@ def forecast(req: ForecastRequest):
     exp_fc = fit_and_forecast(exp, steps, freq, method=method)
 
     return ForecastResponse(
-        period_end=[
-            d.strftime("%Y-%m-%d") for d in inc_fc.index.to_pydatetime().tolist()
-        ],
+        period_end=[d.strftime("%Y-%m-%d") for d in inc_fc.index.to_pydatetime().tolist()],
         income_forecast=[float(x) for x in inc_fc.values.tolist()],
         expense_forecast=[float(x) for x in exp_fc.values.tolist()],
     )