1、安裝依賴

yum install openssl-devel bzip2-devel expat-devel gdbm-devel readline-devel sqlite-devel

2、下載python包

wget https://www.python.org/ftp/python/3.6.4/Python-3.6.4.tgz

3、解壓、編譯

tar xf Python-3.6.4.tgz -C /usr/local/
cd  /usr/local/Python-3.6.4
./configure
make && make install

4、備份舊版本python依賴，鏈接新版本python

mv /usr/bin/python{,.bak}
[root@zabbix-server local]# ln -s /usr/local/bin/python3.6 /usr/bin/python
[root@zabbix-server local]# python -V
Python 3.6.4

5、修改yum配置文件

將第一行指定的python版本改為python2.7(#!/usr/bin/python 改為 #!/usr/bin/python2.7)

centos7 安裝python3