先安装python所需要的依赖

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

下载python安装包

wget https://www.python.org/ftp/python/3.8.1/Python-3.8.1.tgz

在user/local/创建python3文件 并解压python3的压缩包解压到当前文件夹

mkdir -p /usr/local/python3
tar -zxvf Python-3.8.1.tgz

安装Gcc和openssl依赖

yum install gcc
yum install libffi-devel -y

配置并安装

cd Python-3.8.1
./configure --prefix=/usr/local/python3
make && make install

配置python3和pip软连接

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

查看python3和pip3是否配置好

python3
pip3

linux安装pip

wget https://bootstrap.pypa.io/pip/2.7/get-pip.py
python get-pip.py