Centos7安装Python3

centos7 带Python2，很多系统命令都依赖Python2。

[root@localhost ~]# python

Python 2.7.5 (default, Oct 30 2018, 23:45:53)

[GCC 4.8.5 20150623 (Red Hat 4.8.5-36)] on linux2

Type "help", "copyright", "credits" or "license" for more information.

输入Python命令，查看可以得知是Python2.7.5版本

输入

which python

一般是位于/usr/bin/python目录下。

下面安装Python3

首先安装依赖包

yum -y groupinstall "Development tools"

yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel

 

根据自己需求下载不同版本的Python3

wget https://www.python.org/ftp/python/3.6.5/Python-3.6.5.tgz

我的存放目录是/usr/local/python3，使用命令：

mkdir /usr/local/python3

建立一个空文件夹

解压，进入目录，安装Python3

tar xzvf Python-3.6.5.tgz

cd Python-3.6.5

./configure --prefix=/usr/local/python3

make && make install

创建软链接

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

ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3

在命令行中输入python3测试