Update app.py

app.py

@@ -47,7 +47,7 @@ root.addHandler(handler2)
 # constant data
 
 dtype = torch.float16
-device = torch.cuda.is_available() ? "cuda" : "cpu"
+device = torch.cuda.is_available() if "cuda" else "cpu"
 base = "SG161222/Realistic_Vision_V6.0_B1_noVAE"
 adapter = MotionAdapter.from_pretrained("guoyww/animatediff-motion-adapter-v1-5-3", torch_dtype=dtype, device=device)