LightGBMでAttributeError: ‘LGBMRegressor’ object has no attribute ‘feature_name_’

LightGBMを使っていると表題のエラー。

feature_name_属性がないと怒られる。

最新のmasterブランチにこの属性は含まれていないようで、nightlyビルドを使ってみたらエラーは出なくなった。

feature_name_ attribute has been merged in master recently and is not included in any official release yet. You can download nightly build or install from sources: https://lightgbm.readthedocs.io/en/latest/Installation-Guide.html.

pip uninstall lightgbm
pip install lightgbm==3.0.0rc1

参考

AttributeError: 'LGBMRegressor' object has no attribute 'feature_name_' · Issue #2784 · microsoft/LightGBM

Environment info Operating System : macOS Catalina Version 10.15.2 CPU/GPU model:CPU C++/Python/R version: Python LightG...