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Update _utils.py

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This commit is contained in:
Daniel Han 2025-03-21 15:25:06 -07:00
commit 9799373b13
1 changed files with 18 additions and 19 deletions
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35
unsloth/models/_utils.py
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@ -290,25 +290,24 @@ pass
# =============================================
# Fix KeyError: 'Cache only has 0 layers, attempted to access layer with index 0'
import transformers.cache_utils
if hasattr(transformers.cache_utils, "DynamicCache") and \
transformers.cache_utils.DynamicCache.__getitem__.__name__ != "__cache_utils_getitem__":
# import transformers.cache_utils
# if hasattr(transformers.cache_utils, "DynamicCache") and \
# transformers.cache_utils.DynamicCache.__getitem__.__name__ != "__cache_utils_getitem__":
source = inspect.getsource(transformers.cache_utils.DynamicCache.__getitem__)
start = source.find("def")
spaces = start*" "
source = source.split("\n")
source = "\n".join(x[start:] for x in source)
where = source.find("raise KeyError")
# source = source[:where] + \
# f"if len(self) == 0:\n{spaces}{spaces}"\
# " raise RuntimeError('Unsloth: You must call `FastLanguageModel.for_inference(model)` before doing inference for Unsloth models.')\n" + \
# f"{spaces}{spaces}else:\n{spaces}{spaces}{spaces}" + source[where:]
source = source.replace("__getitem__", "__cache_utils_getitem__", 1)
print(source)
exec(source)
transformers.cache_utils.DynamicCache.__getitem__ = __cache_utils_getitem__
pass
# source = inspect.getsource(transformers.cache_utils.DynamicCache.__getitem__)
# start = source.find("def")
# spaces = start*" "
# source = source.split("\n")
# source = "\n".join(x[start:] for x in source)
# where = source.find("raise KeyError")
# source = source[:where] + \
# f"if len(self) == 0:\n{spaces}{spaces}"\
# " raise RuntimeError('Unsloth: You must call `FastLanguageModel.for_inference(model)` before doing inference for Unsloth models.')\n" + \
# f"{spaces}{spaces}else:\n{spaces}{spaces}{spaces}" + source[where:]
# source = source.replace("__getitem__", "__cache_utils_getitem__", 1)
# exec(source)
# transformers.cache_utils.DynamicCache.__getitem__ = __cache_utils_getitem__
# pass
# =============================================
# =============================================