Update app.py

app.py

@@ -14,3 +14,11 @@ def start_worker():
 
 executor = ThreadPoolExecutor(max_workers=1)
 executor.submit(start_worker)
+
+from fastapi import FastAPI
+
+app = FastAPI()
+
+@app.get("/")
+def greet_json():
+    return {"Hello": "World!"}