Trying to unpickle estimator LinearRegression from version 0.23.2 when using version 1.1.2.

Trying to unpickle estimator LinearRegression from version 0.23.2 when using version 1.1.2.

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pip install scikit-learn==0.23.2

或者

pip install scikit-learn==0.23.2 -i https://pypi.tuna.tsinghua.edu.cn/simple （推荐！！！）