基于centos7字段安装Python3的脚本如下

1、新建Python_install.sh文件，写入如下内容

#!/bin/sh
mkdir -p /usr/local/python3
yum groupinstall -y "Development tools"
yum -y install wget
yum install -y gcc gcc-c++ zlib zlib-devel openssl-devel bzip2-devel expat-devel gdbm-devel readline-devel sqlite-devel libffi-devel
wget https://www.python.org/ftp/python/3.6.6/Python-3.6.6.tar.xz && tar -xvf Python-3.6.6.tar.xz && cd Python-3.6.6
./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
cd ..
rm -rf Python-3.6.6 Python-3.6.6.tar.xz
echo "python3 installed"

2、执行脚本

sh python_install.sh