Centos7安装python3

一：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

二：然后根据自己需求下载不同版本的Python3，我下载的是Python3.7.2

wget https://www.python.org/ftp/python/3.7.2/Python-3.7.2.tar.xz

三：指定存放目录

mkdir /usr/local/python3 

四：安装

tar -xvJf  Python-3.7.2.tar.xz  # 解包
cd Python-3.7.2  # 进入软件包
./configure --prefix=/usr/local/python3  # 编译
make && make install  # 安装

• 如果 make && make install 出错

yum install libffi-devel -y

• 重新执行 make && make install 即可

五：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