关于CentOS7安装Python3

1.安装Pyhton3所需要的依赖

yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel libffi-devel gcc make

2.下载python3

wget https://www.python.org/ftp/python/3.8.0/Python-3.8.0.tgz

注：我安装在了 /opt/ 的路径下，路径可以自己选择

3.解压

tar -zxvf Python-3.8.0.tgz
cd Python-3.8.0
./configure --prefix=/usr/local/python3 --enable-optimizations --with-ssl 

注：./configure --prefix=/usr/local/python3 --enable-optimizations --with-ssl 这句话的作用是将程序安装在 /usr/local/python3 这个目录下，启用优化，安装pip需要用到ssl

4.编译安装

make && make install

注：make是编译，make install是安装

5.创建软连接

ln -s /usr/local/python3/bin/python3 /usr/local/bin/python3
ln -s /usr/local/python3/bin/pip3 /usr/local/bin/pip3

6.验证安装是否成功

python3 -V
pip3 -V