centos 7下安装python3.6

1.安装python3.5可能使用的依赖
yum install openssl-devel bzip2-devel expat-devel gdbm-devel readline-devel sqlite-devel
yum install gcc

2.到python官网找到下载路径, 用wget下载
wget

3.解压tgz包
[root@localhost soft]#cd /soft
[root@localhost soft]#tar -zxvf Python-3.6.5.tgz

4.把python移到/usr/local下面
[root@localhost soft]# mv Python-3.6.5 /usr/local

5.编译安装
进入python目录
cd /usr/local/Python-3.6.5/
./configure
make
make install

6.删除旧的软链接，创建新的软链接到最新的python
rm -rf /usr/bin/python
rm -rf /usr/local/bin/python
ln -s /usr/local/bin/python3.6 /usr/bin/python
ln -s /usr/local/bin/python3.6 /usr/local/bin/python
[root@localhost Python-3.6.5]# python -V
Python 3.6.5