利用pyenv 實現python 多版本切換
下載
curl -L https://raw.githubusercontent.com/yyuu/pyenv-installer/master/bin/pyenv-installer | bash
安裝支持包
yum install zlib-devel openssl-devel sqlite-devel patch
增加配置：.bash_profile
export PATH="/root/.pyenv/bin:$PATH" eval "$(pyenv init -)" eval "$(pyenv virtualenv-init -)"
安裝3.6.1
pyenv install 3.6.1
安裝2.7
pyenv install 2.7
如果系統最小化安裝缺少，patch命令
Downloading Python-2.7.tgz... -> https://www.python.org/ftp/python/2.7/Python-2.7.tgz Installing Python-2.7... /root/.pyenv/plugins/python-build/bin/python-build: line 1501: patch: command not found BUILD FAILED (CentOS release 6.5 (Final) using python-build 20160602) Inspect or clean up the working tree at /tmp/python-build.20170612214128.21462 Results logged to /tmp/python-build.20170612214128.21462.log Last 10 log lines: /tmp/python-build.20170612214128.21462 ~ /tmp/python-build.20170612214128.21462/Python-2.7 /tmp/python-build.20170612214128.21462
python2 、python3 安裝完畢
查看當前python 版本：pyenv versions
system 2.7 * 3.6.1 (set by /root/.pyenv/version)
默認3.6.1，可以自行檢查python版本，這裏不做說明
切換到2.7版本 pyenv global 2.7
查看當前python 版本： pyenv versions
system * 2.7 (set by /root/.pyenv/version) 3.6.1
其他常用命令：
pyenv install --list #查看可用安裝版本，包含pytho、jpython、anaconda、miniconda...