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Fix backward compatibility for full path imports of Fast Image Processors #44926

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Merged
hmellor merged 5 commits into from
Mar 23, 2026
Merged

Fix backward compatibility for full path imports of Fast Image Processors #44926

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866e830
Fix backward compatibility full path imports fast image processors
yonigozlan Mar 22, 2026
e2d1e20
skip fast aliases in check_repo
yonigozlan Mar 22, 2026
4193140
Add warning
hmellor Mar 23, 2026
4f4a9f5
format
hmellor Mar 23, 2026
8c1854e
Merge branch 'main' into even-more-im-proc-refactor-fixes
hmellor Mar 23, 2026
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10 changes: 10 additions & 0 deletions src/transformers/__init__.py
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Original file line number Diff line number Diff line change
Expand Up @@ -822,6 +822,16 @@ def _get_target():
_create_module_alias(f"{__name__}.tokenization_utils", ".tokenization_utils_sentencepiece")
_create_module_alias(f"{__name__}.image_processing_utils_fast", ".image_processing_backends")

for _proc_file in sorted((Path(__file__).parent / "models").rglob("image_processing_*.py")):
_model = _proc_file.parent.name
_module = _proc_file.stem
_target = f".models.{_model}.{_module}"
_create_module_alias(f"{__name__}.models.{_model}.{_module}_fast", _target)
# Also map XImageProcessorFast -> XImageProcessor for backward compat with old class names.
sys.modules[f"{__name__}.models.{_model}.{_module}_fast"].__getattr__ = lambda name, t=_target: getattr(
importlib.import_module(t, __name__), name.removesuffix("Fast")
)


if not is_torch_available():
logger.warning_advice(
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3 changes: 3 additions & 0 deletions utils/check_repo.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1191,6 +1191,9 @@ def ignore_undocumented(name: str) -> bool:
# BLT models are internal building blocks, tested implicitly through BltForCausalLM
if name.startswith("Blt"):
return True
# image_processing_*_fast are backward-compat module aliases, not public objects.
if name.startswith("image_processing_") and name.endswith("_fast"):
return True
if name in SHOULD_HAVE_THEIR_OWN_PAGE:
return True
return False
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