Centos7.4下安装Python3

安装依赖包

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

下载Python3

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

创建目录

mkdir /usr/local/python3 

解压缩包并安装

tar -xvJf  Python-3.6.2.tar.xz
cd Python-3.6.2
./configure --prefix=/usr/local/python3
make && make install

创建软连接

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

Centos 默认有python2.7，通过键入python 能开启python2 键入python3能打开python3的解释器