一、源码安装

1.安装依赖软件包

        安装开发工具包

[root@localhost ~]# yum groupinstall "Development Tools" -y
[root@localhost ~]# 
[root@localhost ~]# yum -y install  zlib-devel bzip2-devel openssl-devel  sqlite-devel readline-devel  libffi-devel

        官网下载python软件包

[root@localhost ~]# wget https://www.python.org/ftp/python/3.7.6/Python-3.7.6.tar.xz

2.解压安装

[root@localhost ~]# tar -xf Python-3.7.6.tar.xz
[root@localhost ~]#  cd Python-3.7.6
[root@localhost Python-3.7.6]# 

 3.修改配置信息

[root@localhost Python-3.7.6]# sed -ri 's/^#readline/readline/' Modules/Setup.dist
[root@localhost Python-3.7.6]# sed -ri 's/^#(SSL=)/\1/' Modules/Setup.dist
[root@localhost Python-3.7.6]# sed -ri 's/^#(_ssl)/\1/' Modules/Setup.dist 
[root@localhost Python-3.7.6]# sed -ri 's/^#([\t]*-DUSE)/\1/' Modules/Setup.dist 
[root@localhost Python-3.7.6]# sed -ri 's/^#([\t]*-L\$\(SSL\))/\1/' Modules/Setup.dist

4.开始编译安装

[root@localhost Python-3.7.6]# ./configure --enable-shared
#指定共享库
[root@localhost Python-3.7.6]# make -j 2 && make install
#-j 当前主机的CPU的核心数

二、配置环境

1.配置环境变量

[root@localhost Python-3.7.6]# cmd1='export LD_LIBRARY_PATH='
[root@localhost Python-3.7.6]# cmd2='$LD_LIBRARY_PATH:/usr/local/lib'
[root@localhost Python-3.7.6]# file="/etc/profile.d/python3_lib.sh"
[root@localhost Python-3.7.6]# echo "${cmd1}${cmd2}" >$file
[root@localhost Python-3.7.6]#  path="/usr/local/lib"
[root@localhost Python-3.7.6]# file2="/etc/ld.so.conf.d/python3.conf"
[root@localhost Python-3.7.6]# echo ${path} > $file2

使得环境生效

[root@localhost Python-3.7.6]# ldconfig 
[root@localhost Python-3.7.6]# 
[root@localhost Python-3.7.6]# source /etc/profile

三、测试安装

1.查看python3版本

[root@localhost Python-3.7.6]# python3 -V

[root@localhost Python-3.7.6]# python3

3.测试pip3

pip3是给python安装扩展或第三方模块包

python安装完成！