Fix name and get_class method in AutoFeatureExtractor (#13385)

src/transformers/models/auto/feature_extraction_auto.py

@@ -26,6 +26,7 @@ from .configuration_auto import (
     CONFIG_MAPPING_NAMES,
     AutoConfig,
     config_class_to_model_type,
+    model_type_to_module_name,
     replace_list_option_in_docstrings,
 )
 
@@ -40,7 +41,7 @@ FEATURE_EXTRACTOR_MAPPING_NAMES = OrderedDict(
         ("wav2vec2", "Wav2Vec2FeatureExtractor"),
         ("detr", "DetrFeatureExtractor"),
         ("layoutlmv2", "LayoutLMv2FeatureExtractor"),
-        ("clip", "ClipFeatureExtractor"),
+        ("clip", "CLIPFeatureExtractor"),
     ]
 )
 
@@ -50,10 +51,13 @@ FEATURE_EXTRACTOR_MAPPING = _LazyAutoMapping(CONFIG_MAPPING_NAMES, FEATURE_EXTRA
 def feature_extractor_class_from_name(class_name: str):
     for module_name, extractors in FEATURE_EXTRACTOR_MAPPING_NAMES.items():
         if class_name in extractors:
-            break
+            module_name = model_type_to_module_name(module_name)
 
             module = importlib.import_module(f".{module_name}", "transformers.models")
             return getattr(module, class_name)
+            break
+
+    return None
 
 
 class AutoFeatureExtractor: