[Type annotations] fixed in save_model_card (#6948)

fixed type annotations
Co-authored-by: Sayak Paul <spsayakpaul@gmail.com>

examples/text_to_image/train_text_to_image.py

@@ -67,8 +67,8 @@ DATASET_NAME_MAPPING = {
 def save_model_card(
     args,
     repo_id: str,
-    images=None,
-    repo_folder=None,
+    images: list = None,
+    repo_folder: str = None,
 ):
     img_str = ""
     if len(images) > 0:

examples/text_to_image/train_text_to_image_lora.py

@@ -56,7 +56,9 @@ check_min_version("0.27.0.dev0")
 logger = get_logger(__name__, log_level="INFO")
 
 
-def save_model_card(repo_id: str, images=None, base_model=str, dataset_name=str, repo_folder=None):
+def save_model_card(
+    repo_id: str, images: list = None, base_model: str = None, dataset_name: str = None, repo_folder: str = None
+):
     img_str = ""
     for i, image in enumerate(images):
         image.save(os.path.join(repo_folder, f"image_{i}.png"))

examples/text_to_image/train_text_to_image_sdxl.py

@@ -66,12 +66,12 @@ DATASET_NAME_MAPPING = {
 
 def save_model_card(
     repo_id: str,
-    images=None,
-    validation_prompt=None,
-    base_model=str,
-    dataset_name=str,
-    repo_folder=None,
-    vae_path=None,
+    images: list = None,
+    validation_prompt: str = None,
+    base_model: str = None,
+    dataset_name: str = None,
+    repo_folder: str = None,
+    vae_path: str = None,
 ):
     img_str = ""
     for i, image in enumerate(images):