Update app.py

app.py

@@ -1,7 +1,10 @@
-from fastapi import FastAPI
+from flask import Flask
 
-app = FastAPI()
+app = Flask(__name__)
 
-@app.get("/")
-async def root():
-  return {"message": "Hello World"}
+@app.route("/")
+def index():
+  return {"output": "Hello, world!"}
+  
+if __name__ == "__main__":
+  app.run(host="0.0.0.0", port=7860)