Python开发环境之pyenv环境搭建

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首先到Github上下载Pyenv相应的一键安装脚本，

1	$ curl -L https://raw.githubusercontent.co ... bin/pyenv-installer | bash

安装完毕，设置环境变量，设置环境变量，可以添加到个人家目录的.bashrc或.bash_profile及系统的全
  局的/etc/profile，

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# Load pyenv automatically by adding # the following to ~/.bash_profile: export PATH="/home/lavenliu/.pyenv/bin:$PATH" eval "$(pyenv init -)" eval "$(pyenv virtualenv-init -)"

设置完毕之后，可以在命令行进行验证，

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[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

以上都没有问题。比如，安装一个3.5.2的版本Python，

1	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，

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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，

1	$ mkdir ~/.pyenv/cache

如果使用手工安装，则需要安装一些依赖，

1	# 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，

1	$ pyenv install 3.5.2

安装完毕，使用version命令进行查看，

1 2	pyenv version 3.5.2 (set by /home/lavenliu/.python-version)

至此，已经安装完毕。