pyenv 配置python虚拟环境

安装pyenv环境
yum -y install git
yum install gcc make patch gdbm-devel openssl-devel sqlite-devel readline-devel zlib-devel bzip2-devel
useradd python
passwd python

# su - python
$ curl -L https://raw.githubusercontent.com/pyenv/pyenv-installer/master/bin/pyenv-installer | bash
PATH=$PATH:$HOME/bin
vim ~/.bashrc  添加以下三行
export PATH="/home/python/.pyenv/bin:$PATH"
eval "$(pyenv init -)"
eval "$(pyenv virtualenv-init -)"
$ source ~/.bashrc

python --version
pyenv
python -V

pyenv versions
pyenv help install

pyenv install 3.5.3
pyenv install 3.5.3 -v

$ mkdir ~/.pyenv/cache

下载好的包放进去,三种压缩格式的都放进去

$ pyenv versions
* system (set by /home/python/.pyenv/version)
  3.5.3

[python@pythonsys ~]$ pyenv
pyenv 1.1.3
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. 当前文件夹与版本环境捆绑在一起，子目录继承
   global      Set or show the global Python version。                    改变全局版本
   shell       Set or show the shell-specific Python version              只改变当前shell的版本
   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.

$ mkdir py3.5.3
cd py3.5.3
[python@pythonsys ~]$ pyenv version
system (set by /home/python/.pyenv/version)
[python@pythonsys ~]$ pyenv versions
* system (set by /home/python/.pyenv/version)
  3.5.3

子目录继承

会将下载的压缩包也保存在cache目录中
[python@pythonsys .pyenv]$ pyenv install 3.6.2 -v
[python@pythonsys .pyenv]$ ls /home/python/.pyenv/cache/
Python-3.6.2.tar.gz

[python@pythonsys cmdb]$ pyenv versions
* system (set by /home/python/.pyenv/version)
  3.5.3
  3.6.1
  3.6.2
[python@pythonsys cmdb]$ pyenv virtualenv 3.5.3 magedu353.    多人协作开发使用虚拟环境,避免公共目录envs混乱
Requirement already satisfied: setuptools in /home/python/.pyenv/versions/3.5.3/envs/magedu353/lib/python3.5/site-packages
Requirement already satisfied: pip in /home/python/.pyenv/versions/3.5.3/envs/magedu353/lib/python3.5/site-packages
[python@pythonsys cmdb]$ pyenv version
system (set by /home/python/.pyenv/version)
[python@pythonsys cmdb]$ pyenv versions
* system (set by /home/python/.pyenv/version)
  3.5.3
  3.5.3/envs/magedu353
  3.6.1
  3.6.2
  magedu353
[python@pythonsys cmdb]$ pyenv local magedu353
(magedu353) [python@pythonsys cmdb]$ pyenv version
magedu353 (set by /home/python/magedu/project/cmdb/.python-version)
(magedu353) [python@pythonsys cmdb]$ pyenv versions
  system
  3.5.3
  3.5.3/envs/magedu353
  3.6.1
  3.6.2
* magedu353 (set by /home/python/magedu/project/cmdb/.python-version)
(magedu353) [python@pythonsys cmdb]$