Python开发环境之pyenv环境搭建 推荐

$ curl -L https://raw.githubusercontent.com/yyuu/pyenv-installer/master/bin/pyenv-installer | bash

# Load pyenv automatically by adding
# the following to ~/.bash_profile:

export PATH="/home/lavenliu/.pyenv/bin:$PATH"
eval "$(pyenv init -)"
eval "$(pyenv virtualenv-init -)"

[lavenliu@VM_113_230_centos ~]$ . ~/.bash_profile
[lavenliu@VM_113_230_centos ~]$ pyenv
pyenv 20160726
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/yyuu/pyenv#readme[/code] 
以上都没有问题。比如，安装一个3.5.2的版本Python，
pyenv install 3.5.2
如果下载速度慢的话，可以事先下载之，放到~/.pyenv/cache目录即可。修改~/.pyenv/plugins/python-build/share/python-build/3.5.2文件，

cat ~/.pyenv/plugins/python-build/share/python-build/3.5.2
#require_gcc
install_package "openssl-1.0.2g" "https://www.openssl.org/source/openssl-1.0.2g.tar.gz#b784b1b3907ce39abf4098702dade6365522a253ad1552e267a9a0e89594aa33" mac_openssl --if has_broken_mac_openssl
install_package "readline-6.3" "http://ftpmirror.gnu.org/readline/readline-6.3.tar.gz#56ba6071b9462f980c5a72ab0023893b65ba6debb4eeb475d7a563dc65cafd43" standard --if has_broken_mac_readline
if has_tar_xz_support; then
install_package "Python-3.5.2" "~/.pyenv/cache/Python-3.5.2.tar.gz" ldflags_dirs standard verify_py35 ensurepip
else
install_package "Python-3.5.2" "~/.pyenv/cache/Python-3.5.2.tar.gz" ldflags_dirs standard verify_py35 ensurepip
fi


由于没有~/.pyenv/cache目录，进行手工创建，
$ mkdir ~/.pyenv/cache


如果使用手工安装，则需要安装一些依赖，
# yum install -y gcc make patch gdbm-devel openssl-devel sqlite-devel zlib-devel bzip2-devel readline-devel


需要事先准备好Python-3.5.2.tar.gz的安装包，放到~/.pyenv/cache目录下。然后，在命令行直接使用pyenv install 3.5.2即可，
$ pyenv install 3.5.2


安装完毕，使用version命令进行查看，
pyenv version
3.5.2 (set by /home/lavenliu/.python-version)
至此，已经安装完毕。