Update app.py

Making it CPU compatible

app.py

@@ -5,12 +5,12 @@ import modin.pandas as pd
 from PIL import Image
 from diffusers import DiffusionPipeline, StableDiffusionLatentUpscalePipeline
 
-device = 'cuda' #if torch.cuda.is_available() else 'cpu'
+device = 'cuda' if torch.cuda.is_available() else 'cpu'
 
-pipe = DiffusionPipeline.from_pretrained("circulus/canvers-real-v3.8.1", torch_dtype=torch.float16, safety_checker=None)
+pipe = DiffusionPipeline.from_pretrained("circulus/canvers-real-v3.8.1", torch_dtype=torch.float16, safety_checker=None) if device = ("cuda") else pipe = DiffusionPipeline.from_pretrained("circulus/canvers-real-v3.8.1")
 pipe = pipe.to(device)
 pipe.enable_xformers_memory_efficient_attention()
-refiner = DiffusionPipeline.from_pretrained("stabilityai/stable-diffusion-xl-refiner-1.0", use_safetensors=True, torch_dtype=torch.float16, variant="fp16")
+refiner = DiffusionPipeline.from_pretrained("stabilityai/stable-diffusion-xl-refiner-1.0", use_safetensors=True, torch_dtype=torch.float16, variant="fp16") if device = ("cuda") else refiner = DiffusionPipeline.from_pretrained("stabilityai/stable-diffusion-xl-refiner-1.0")
 refiner.enable_xformers_memory_efficient_attention()
 refiner = refiner.to(device)