1.安裝依賴環境
yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel
yum -y install readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel
yum -y install libffi-devel mysql-devel gcc gcc-devel python-devel
2.下載python安裝包
wget https://www.python.org/ftp/python/3.8.0/Python-3.8.0.tgz
3.進入/usr/local目錄下，新建python3文件夾
cd /usr/local
mkdir python3
4.將下載好的python壓縮文件放置在linux的/usr/local/python3文件夾下，解壓該壓縮文件
tar -zxvf Python-3.8.0.tgz
5.進入解壓后的目錄，編譯安裝
cd /usr/local/python3/Python-3.8.0
./configure --prefix=/usr/local/python3
make && make install
6.建立Python3和pip3的軟鏈 ,替換python2 (多版本共存可不執行該操作)
mv /usr/bin/python /usr/bin/python.bak ln -s /usr/local/python3/bin/python3.8 /usr/bin/python ln -s /usr/local/python3/bin/pip3 /usr/bin/pip
7.將/usr/local/python3/bin加入PATH
vim /etc/profile //添加以下內容
export PYTHON_HOME=/usr/local/python3
export PATH=${PYTHON_HOME}/bin:$PATH
source /etc/profile //讓配置生效
8.檢查Python3及pip3是否正常可用
python -V
pip -V