1>安装依赖包:
#yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel -y
2>下载文件.
$ git clone https://github.com/pyenv/pyenv.git ~/.pyenv
3>配置环境变量
$ echo ‘export PYENV_ROOT="$HOME/.pyenv"‘ >> ~/.bash_profile
$ echo ‘export PATH="$PYENV_ROOT/bin:$PATH"‘ >> ~/.bash_profile
$ echo -e ‘if command -v pyenv 1>/dev/null 2>&1; thenn eval "$(pyenv init -)"nfi‘ >> ~/.bash_profile
4>安装，3.6.8为例
$ pyenv install -v 3.6.8
原文：https://www.cnblogs.com/what999/p/10917857.html
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