centos7安装python3

1. 安装依赖

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 libffi-devel 

建议是通过is镜像文件搭建本地yum源安装,速度快,又不会升级到太高的版本,

搭建本地yum源的可以参考这个博客  centos搭建私有yum源

2. 下载python3安装包

wget https://www.python.org/ftp/python/3.7.0/Python-3.7.0.tar.xz

因为centos7的默认openssl版本为1.0.2,支持python3.7,而不用升级openssl,所以我选择的python3.7

3. 安装python3.7

mkdir /usr/local/python3

tar -xf Python-3.7.0.tar.xz

cd Python-3.7.0

./configure --prefix=/usr/local/python3

make && make install

4. 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