推荐用Anaconda，至少Python版本更新跟着Anaconda来（目前3.8）
https://www.anaconda.com/products/individual#Downloads
https://docs.conda.io/en/latest/miniconda.html
https://mirrors.tuna.tsinghua.edu.cn/help/anaconda/
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修改:freesand FROM 60.191.227.*
FROM 60.191.227.*