more readable condition

Author: SunMarc

src/diffusers/configuration_utils.py

@@ -364,7 +364,7 @@ def load_config(
             if subfolder is not None:
                 raise ValueError("DDUF file only allow for 1 level of directory. Please check the DDUF structure")
             # paths inside a DDUF file must always be "/"
-            config_file = "/".join([pretrained_model_name_or_path, cls.config_name])
+            config_file = cls.config_name if pretrained_model_name_or_path == "" else "/".join([pretrained_model_name_or_path, cls.config_name])
             if config_file not in dduf_entries:
                 raise ValueError(
                     f"We did not manage to find the file {config_file} in the dduf file. We only have the following files {dduf_entries.keys()}"

src/diffusers/utils/hub_utils.py

@@ -299,8 +299,9 @@ def _get_model_file(
     if dduf_entries:
         if subfolder is not None:
             raise ValueError("DDUF file only allow for 1 level of directory. Please check the DDUF structure")
-        if "/".join([pretrained_model_name_or_path, weights_name]) in dduf_entries:
-            return "/".join([pretrained_model_name_or_path, weights_name])
+        model_file = weights_name if pretrained_model_name_or_path == "" else "/".join([pretrained_model_name_or_path, weights_name])
+        if model_file in dduf_entries:
+            return model_file
         else:
             raise EnvironmentError(f"Error no file named {weights_name} found in archive {dduf_entries.keys()}.")
     elif os.path.isfile(pretrained_model_name_or_path):