centos7安装python3

cd /tmp
wget https://www.python.org/ftp/python/3.6.2/Python-3.6.2.tar.xz
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
mkdir /usr/local/python3 
mv Python-3.6.7.tar.xz /usr/local/python3/
cd /usr/local/python3/
tar xf Python-3.6.7.tar.xz 
cd Python-3.6.7
./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

python3
Python 3.6.7 (default, Aug 12 2019, 00:26:52) 
[GCC 4.8.5 20150623 (Red Hat 4.8.5-36)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> 
>>> 
>>>