Centos7安装Python3

[root@VM_105_217_centos Python-3.6.2]# python
Python 2.7.5 (default, Aug  4 2017, 00:39:18)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-16)] on linux2
Type "help", "copyright", "credits" or "license" for more information.

which python

yum -y groupinstall "Development tools"
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

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

mkdir /usr/local/python3

tar -xvJf  Python-3.6.4.tar.xz
cd Python-3.6.4
./configure --prefix=/usr/local/python3
make && make install

ln -s /usr/local/python3/bin/python3 /usr/bin/python3
ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3