Update app.py

app.py

@@ -1,11 +1,17 @@
-import os; os.environ.setdefault("GRADIO_USE_CDN","true")
+import os
+os.environ.setdefault("GRADIO_USE_CDN", "true")
+
 import spaces
-@spaces.GPU(duration=10) 
+@spaces.GPU(duration=10)
 def ping(): return "pong"
+
 import gradio as gr
 def fn(x): return f"ok:{x}"
 with gr.Blocks() as demo:
-    t=gr.Textbox(); o=gr.Textbox(); t.submit(fn, t, o)
+    t = gr.Textbox()
+    o = gr.Textbox()
+    t.submit(fn, t, o)
+
 from fastapi import FastAPI
 app = FastAPI()
 app = gr.mount_gradio_app(app, demo, path="/")