linux-centos安装python3

CentOS 7默认安装python2.7，默认指令python上指向python2.7，目前主流使用python3，故另独立安装python3

1、下载

wget https://www.python.org/ftp/python/3.6.6/Python-3.6.6.tar.xz

tar -xvJf Python-3.6.6.tar.xz

2.设置配置

sudo yum install openssl-devel

sudo yum install-ygcc

sudo yum-yinstall zlib*

yum install sqlite-devel

./configure--prefix=/usr/local/python --with -ssl

3.添加软连接

ln -s /usr/local/python/bin/python3.6  /usr/bin/python3

ln -s /usr/local/python/bin/pip3  /usr/bin/pip3