fix: Make pydantic validation optional for backward compatibility

Author: khushal-winner

scripts/convert.py

@@ -24,7 +24,12 @@
 if parent_dir not in sys.path:
     sys.path.insert(0, parent_dir)
 
-from scripts.card_models import CardYAML, MappingYAML, ValidationError as PydanticValidationError
+try:
+    from scripts.card_models import CardYAML, MappingYAML, ValidationError as PydanticValidationError
+    PYDANTIC_AVAILABLE = True
+except ImportError:
+    PYDANTIC_AVAILABLE = False
+    PydanticValidationError = Exception  # Fallback
 
 
 class ConvertVars:
@@ -644,13 +649,14 @@ def get_mapping_data_for_edition(
     with open(mappingfile, "r", encoding="utf-8") as f:
         try:
             data = yaml.safe_load(f)
-            # Validate structure with Pydantic
-            try:
-                validated = MappingYAML(**data)
-                data = validated.model_dump(exclude_none=True)  # Convert back to dict, exclude None values
-            except PydanticValidationError as ve:
-                logging.warning(f"Mapping file validation warning for {mappingfile}: {ve}")
-                # Continue with unvalidated data for backward compatibility
+            # Validate structure with Pydantic if available
+            if PYDANTIC_AVAILABLE:
+                try:
+                    validated = MappingYAML(**data)
+                    data = validated.model_dump(exclude_none=True)  # Convert back to dict, exclude None values
+                except PydanticValidationError as ve:
+                    logging.warning(f"Mapping file validation warning for {mappingfile}: {ve}")
+                    # Continue with unvalidated data for backward compatibility
         except yaml.YAMLError as e:
             logging.info(f"Error loading yaml file: {mappingfile}. Error = {e}")
             data = {}
@@ -752,14 +758,15 @@ def get_language_data(
     with open(language_file, "r", encoding="utf-8") as f:
         try:
             data = yaml.safe_load(f)
-            # Validate structure with Pydantic
-            try:
-                validated = CardYAML(**data)
-                data = validated.model_dump(exclude_none=True)  # Convert back to dict, exclude None values
-            except PydanticValidationError as ve:
-                logging.error(f"Card file validation failed for {language_file}: {ve}")
-                # For card files, validation failure is more critical
-                data = {}
+            # Validate structure with Pydantic if available
+            if PYDANTIC_AVAILABLE:
+                try:
+                    validated = CardYAML(**data)
+                    data = validated.model_dump(exclude_none=True)  # Convert back to dict, exclude None values
+                except PydanticValidationError as ve:
+                    logging.error(f"Card file validation failed for {language_file}: {ve}")
+                    # For card files, validation failure is more critical
+                    data = {}
         except yaml.YAMLError as e:
             logging.error(f"Error loading yaml file: {language_file}. Error = {e}")
             data = {}