Centos 安装 Python3 环境

Centos7默认自带Python2.7，可安装Python3与Python2共存。

[root@Python ~]# python -V
Python 2.7.5

 

1.安装编译相关工具

[root@Python ~]# cat /etc/redhat-release 
CentOS Linux release 7.6.1810 (Core) 

[root@Python ~]# yum -y groupinstall "Development tools"

[root@Python ~]# 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

[root@Python ~]# yum install wget libffi-devel -y

 

2.下载安装包并解压

[root@Python ~]# wget https://www.python.org/ftp/python/3.7.0/Python-3.7.0.tar.xz

[root@Python ~]# tar -xvJf Python-3.7.0.tar.xz

 

3.编译安装

[root@Python ~]# mkdir /usr/local/python3
[root@Python ~]# cd Python-3.7.0
[root@Python ~]# ./configure --prefix=/usr/local/python3
...
[root@Python ~]# make && make install
...

 

4.设置环境变量

[root@syztoo ~]# sed -i '/export PATH=$PATH/s/$/:\/usr\/local\/python3\/bin/' /etc/profile 
[root@syztoo ~]# source /etc/profile

 

5.验证安装情况

[root@docker Python-3.7.0]# python3 -V
Python 3.7.0
[root@docker Python-3.7.0]# pip3 -V
pip 10.0.1 from /usr/local/python3/lib/python3.7/site-packages/pip (python 3.7)