Finalize client_demo.py to pass all checks

Author: Vinisha-projects

examples/client_demo.py

@@ -8,27 +8,29 @@
 import httpx
 from mcp.client.sse import aconnect_sse
 
-# Mock SSE server using FastAPI
 app = FastAPI()
 
+
 @app.get("/sse")
 async def sse_endpoint() -> StreamingResponse:
     async def event_stream() -> AsyncGenerator[str, None]:
         for i in range(3):
-            yield f"data: Hello {i+1}\n\n"
+            yield f"data: Hello {i + 1}\n\n"
             await asyncio.sleep(0.1)
+
     return StreamingResponse(event_stream(), media_type="text/event-stream")
 
+
 def run_mock_server() -> None:
     uvicorn.run(app, host="127.0.0.1", port=8012, log_level="warning")
 
-# MCP client demo to connect to the mock SSE server
+
 async def run_demo() -> None:
     server_thread = Thread(target=run_mock_server, daemon=True)
     server_thread.start()
-    await asyncio.sleep(1)
+    await asyncio.sleep(1)  # Wait for the server to start
 
-    messages = []
+    messages: list[str] = []
 
     async with httpx.AsyncClient() as client:
         async with aconnect_sse(client, "GET", "http://127.0.0.1:8012/sse") as event_source:
@@ -41,5 +43,6 @@ async def run_demo() -> None:
 
     print("\nClient demo finished. Messages received:", messages)
 
+
 if __name__ == "__main__":
-    asyncio.run(run_demo())
+    asyncio.run(run_demo())