Linux centos7安装python3并且不影响python2

一、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 (3.7以上需要libffi-devel)

 

二、获取安装包 编译安装

　　wget https://www.python.org/ftp/python/3.6.4/Python-3.6.4.tar.xz

　　tar -xvJf Python-3.6.4.tar.xz

　　cd Python-3.6.4

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

　　make && make install

 

三、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