pyenv安装
https://github.com/pyenv/pyenv，这里是github的地址，pyenv是一个类似virtualenv的工具，提供python的多版本环境控制
安装依赖环境（root用户）：
yum -y install make gcc patch gdbm-devel openssl-devel sqlite-devel zlib-devel bzip2-devel readline-devel
安装pyenv（普通用户）：
$ git clone https://github.com/pyenv/pyenv.git ~/.pyenv $ echo ‘export PYENV_ROOT="$HOME/.pyenv"‘ >> ~/.bash_profile $ echo ‘export PATH="$PYENV_ROOT/bin:$PATH"‘ >> ~/.bash_profile $ echo ‘eval "$(pyenv init -)"‘ >> ~/.bash_profile $ exec "$SHELL"
查看支持的python版本：
$ pyenv install --list
安装具体的某个版本：
[ocean@jenkins ~]$ pyenv install 3.6.2 Downloading Python-3.6.2.tar.xz... -> https://www.python.org/ftp/python/3.6.2/Python-3.6.2.tar.xz Installing Python-3.6.2... Installed Python-3.6.2 to /home/ocean/.pyenv/versions/3.6.2
[root@jenkins ~]# pyenv install 3.5.2 pyenv: /root/.pyenv/versions/3.5.2 already exists continue with installation? (y/N) y Downloading Python-3.5.2.tar.xz... -> https://www.python.org/ftp/python/3.5.2/Python-3.5.2.tar.xz Installing Python-3.5.2... patching file Lib/venv/scripts/posix/activate.fish Installed Python-3.5.2 to /root/.pyenv/versions/3.5.2
查看安装的python版本：
[ocean@jenkins ~]$ pyenv versions * system (set by /home/ocean/.pyenv/version) 3.6.2
ok，简单使用可以查看帮助：
[ocean@jenkins ~]$ pyenv help Usage: pyenv <command> [<args>] Some useful pyenv commands are: commands List all available pyenv commands local Set or show the local application-specific Python version global Set or show the global Python version shell Set or show the shell-specific Python version install Install a Python version using python-build uninstall Uninstall a specific Python version rehash Rehash pyenv shims (run this after installing executables) version Show the current Python version and its origin versions List all Python versions available to pyenv which Display the full path to an executable whence List all Python versions that contain the given executable See `pyenv help <command>‘ for information on a specific command. For full documentation, see: https://github.com/pyenv/pyenv#readme
原文：http://www.cnblogs.com/ocean-boy/p/7475922.html