errror:'Booster' object has no attribute 'attr'

[shushan2017]

model_path = 'c://model/m18.m1'
lgb_model = lgb.Booster(model_file=model_path)

input_type = FloatTensorType([1, 154])

onnx_model = onnxmltools.convert_lightgbm(lgb_model, initial_types=[('input', input_type)],
target_opset=9)
Traceback (most recent call last):

Cell In[4], line 1
onnx_model = onnxmltools.convert_lightgbm(lgb_model, initial_types=[('input', input_type)],

File C:\anaconda3\Lib\site-packages\onnxmltools\convert\main.py:137 in convert_lightgbm
return convert(model, name, initial_types, doc_string, target_opset, targeted_onnx,

File C:\anaconda3\Lib\site-packages\onnxmltools\convert\lightgbm\convert.py:59 in convert
model = WrappedBooster(model)

File C:\anaconda3\Lib\site-packages\onnxmltools\convert\lightgbm_parse.py:25 in init
self.objective_ = self.get_objective()

File C:\anaconda3\Lib\site-packages\onnxmltools\convert\lightgbm_parse.py:62 in get_objective
objective = self.booster_.attr('objective')

AttributeError: 'Booster' object has no attribute 'attr'

//*****************************
python=3.11
lithtgbm=4.0.0
onnxmltools=1.11.2

[siran1996]

I have the issue, any updates?

[morgand-hastings]

I have this issue also, any updates?

[XMoyas]

any updates? or any other solutions?

[morgand-hastings]

Force downgrade of LightGBM to < v4.0 solved this for me:

pip install --force-reinstall -v "lightgbm==3.3.5"

[shushan2017]

强制将 LightGBM 降级到 < v4.0 为我解决了这个问题：

pip install --force-reinstall -v "lightgbm==3.3.5"

t hank you！！！！！