centos7.3安装python3

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

 

wget https://www.python.org/ftp/python/3.6.2/Python-3.6.2.tgz

 

tar -zxvf Python-3.6.2.tgz

cd Python-3.6.2.tgz

./configure

make&make install

 

rm -rf /usr/bin/python

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

 

yum不可用（因为yum使用的python2，所以装了3不能用了）

vim /usr/bin/vim

更改为#!/usr/bin/python2