centos7安装Python3

下载python源码包

网址：https://www.python.org/downloads/release/python-362/

下载地址：https://www.python.org/ftp/python/3.6.2/Python-3.6.2.tgz

安装库环境

[root@localhost opt]# yum install gcc patch libffi-devel python-devel zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel -y

下载并解压安装包

[root@localhost opt]# wget https://www.python.org/ftp/python/3.6.2/Python-3.6.2.tgz

[root@localhost opt]# tar -xf Python-3.6.2.tgz

进入到解压后的目录中

[root@localhost opt]# cd python36/

[root@localhost python36]# ./configure --prefix=/opt/python36

[root@localhost python36]# make && make install

添加环境变量

查看环境变量

[root@localhost opt]# echo $PATH
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin:/root/bin

添加python3的工作目录

[root@localhost python36]#PATH="/opt/python36/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin"

添加path变量到全局配置文件中,每次开机就加载,在/etc/profile最后一行添加

PATH="/opt/python36/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/root/bin"

然后

source /etc/profile