CentOS 7 安装多版本python环境

系统版本：CentOS Linux release 7.2.1511 (Core)

系统自带了python2.7版本，只用添加python3.5版本即可

1.安装或更新相关包

yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-de

2.使用make指令安装python3.5

• wget下载安装压缩包

wget https://www.python.org/ftp/python/3.5.3/Python-3.5.3.tar.xz

• 解压缩python安装包

tar xf Python-3.5.3.tar.xz -C /usr/local/src/

• 安装

cd /usr/local/src/Python-3.5.3
./configure --prefix=/usr/local/python3
make && make install

• 查看一下已经安装的扩展包

/usr/local/python3/bin/pip3 list

• 更新pip

/usr/local/python3/bin/pip3 install --upgrade pip

• 查看是否安装成功

/usr/local/python3/bin/pip3 list

• 创建python3软链接

ln -s /usr/local/python3/bin/python3 /usr/bin/python3

• 查看Python版本验证是否安装成功

python3