1. Background
Run the Python project, the error message is as follows:
Trying to unpickle estimator LinearRegression from version 0.23.2 when using version 1.1.2.
From the error message, it is because the version of scikit-learn is too high , so it is not supported, and the version needs to be reduced to 0.32.2
Two, the solution
Install scikit-learn version 0.32.2 , the installation command is as follows:
pip install scikit-learn==0.23.2
or
pip install scikit-learn==0.23.2 -i https://pypi.tuna.tsinghua.edu.cn/simple
It is recommended to specify Tsinghua source, the download is relatively fast!