参考：https://github.com/uber/causalml

依赖：https://github.com/uber/causalml/blob/master/requirements.txt

安装：

1. sudo pip install --upgrade pip
2. sudo pip install -i https://pypi.tuna.tsinghua.edu.cn/simple Cython
3. sudo pip install -i https://pypi.tuna.tsinghua.edu.cn/simple causalml

报错：ImportError: cannot import name ‘factorial’

问题解决：sudo pip install statsmodels --upgrade

官方例子：https://github.com/uber/causalml/blob/master/examples/uplift_trees_with_synthetic_data.ipynb

文档：https://causalml.readthedocs.io/en/latest/index.html