centos7安装python3

CentOS系统

wget https://www.moerats.com/usr/shell/Python3/CentOS_Python3.6.sh && sh CentOS_Python3.6.sh

Debian系统

wget https://www.moerats.com/usr/shell/Python3/Debian_Python3.6.sh && sh Debian_Python3.6.sh
输入Python命令，查看可以得知是Python2.7.5版本
输入which python
一般是位于/usr/bin/python目录下
安装Python3
首先安装依赖包
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 Python3.6.2
wget https://www.python.org/ftp/python/3.6.2/Python-3.6.2.tar.xz
新建文件夹，将软件放在python3下 mkdir /usr/local/python3
然后解压压缩包，进入该目录，安装Python3
tar -xvJf Python-3.6.2.tar.xz
cd Python-3.6.2
./configure --prefix=/usr/local/python3
make -j && make install
创建软链接
ln -s /usr/local/python3/bin/python3 /usr/bin/python3
ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3