Update app.py

app.py

@@ -66,8 +66,8 @@ def translate(text,lang):
     print(ret)
     return ret
 
-progress((0, step))
 def progress_callback(i, t, z):
+    global progress
     progress((i+1, step))
 
 def generate_random_string(length):
@@ -169,12 +169,16 @@ def main():
     global device
     global step
     global dtype
-
+    global progress
+        
     device = "cuda"
     dtype = torch.bfloat16
     result=[]
     step = 2
 
+    progress=gr.Progress()
+    progress((0, step))
+
     base = "stabilityai/stable-diffusion-xl-base-1.0"
     repo = "ByteDance/SDXL-Lightning"
     ckpt = f"sdxl_lightning_{step}step_unet.safetensors"