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Fix explicit local code resolution for tokenizers and image processors #45169

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Merged
vasqu merged 2 commits into from
Apr 1, 2026
+10 −6
Merged

Fix explicit local code resolution for tokenizers and image processors #45169

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72ef7ac
Fix tokenizer `explicit_local_code` detection
hmellor Apr 1, 2026
cf7e056
Fix image processor `explicit_local_code` detection
hmellor Apr 1, 2026
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2 changes: 1 addition & 1 deletion src/transformers/models/auto/image_processing_auto.py
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Original file line number Diff line number Diff line change
Expand Up @@ -725,7 +725,7 @@ def from_pretrained(cls, pretrained_model_name_or_path, *inputs, **kwargs):
has_remote_code = image_processor_auto_map is not None
has_local_code = image_processor_class is not None or type(config) in IMAGE_PROCESSOR_MAPPING
explicit_local_code = has_local_code and not (
image_processor_class or IMAGE_PROCESSOR_MAPPING[type(config)]
image_processor_class or _load_class_with_fallback(IMAGE_PROCESSOR_MAPPING[type(config)], backend)
).__module__.startswith("transformers.")
if has_remote_code:
class_ref = _resolve_auto_map_class_ref(image_processor_auto_map, backend)
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14 changes: 9 additions & 5 deletions src/transformers/models/auto/tokenization_auto.py
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Original file line number Diff line number Diff line change
Expand Up @@ -738,11 +738,15 @@ def from_pretrained(
or tokenizer_class_from_name(tokenizer_config_class + "Fast") is not None
)
)
explicit_local_code = has_local_code and (
tokenizer_config_class is not None
and not (
tokenizer_class_from_name(tokenizer_config_class).__module__.startswith("transformers.")
and tokenizer_class_from_name(tokenizer_config_class + "Fast").__module__.startswith("transformers.")
explicit_local_code = (
has_local_code
and type(config) not in TOKENIZER_MAPPING
and (
tokenizer_config_class is not None
and not (
tokenizer_class_from_name(tokenizer_config_class)
or tokenizer_class_from_name(tokenizer_config_class + "Fast")
).__module__.startswith("transformers.")
)
)
# V5: Skip remote tokenizer for custom models with incorrect hub tokenizer class
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