Update app.py

app.py

@@ -175,11 +175,11 @@ image_encoder = CLIPVisionModelWithProjection.from_pretrained(os.path.join(model
 # model_sketch.eval()
 
 
-global pipeline
-global MultiResNetModel
-global causal_dit
-global controlnet
-global cur_style
+pipeline = None
+MultiResNetModel = None
+causal_dit = None
+controlnet = None
+cur_style = 'line + shadow'
 
 @spaces.GPU
 def load_ckpt():
@@ -298,7 +298,7 @@ def load_ckpt():
     print('loaded pipeline')
 
 load_ckpt()
-cur_style = 'line + shadow'
+
 @spaces.GPU
 def change_ckpt(style):
     global pipeline