Merge pull request #830 from kohya-ss/dev2

add extension checking for resize_lora.py

networks/resize_lora.py

@@ -219,8 +219,8 @@ def resize_lora_model(lora_sd, new_rank, save_dtype, device, dynamic_method, dyn
     for key, value in tqdm(lora_sd.items()):
       weight_name = None
       if 'lora_down' in key:
-        block_down_name = key.split(".")[0]
+        block_down_name = key.rsplit('.lora_down', 1)[0]
-        weight_name = key.split(".")[-1]
+        weight_name = key.rsplit(".", 1)[-1]
         lora_down_weight = value
       else:
         continue
@@ -283,7 +283,10 @@ def resize_lora_model(lora_sd, new_rank, save_dtype, device, dynamic_method, dyn
 
 
 def resize(args):
+  if args.save_to is None or not (args.save_to.endswith('.ckpt') or args.save_to.endswith('.pt') or args.save_to.endswith('.pth') or args.save_to.endswith('.safetensors')):
+    raise Exception("The --save_to argument must be specified and must be a .ckpt , .pt, .pth or .safetensors file.")
 
+    
   def str_to_dtype(p):
     if p == 'float':
       return torch.float