Linux(Ubuntu16.04及以下)安装python3.6/pip/venv

$sudo apt-get update
$sudo apt-get upgrade

$sudo apt-get install software-properties-common
$sudo add-apt-repository ppa:deadsnakes/ppa
$sudo apt-get update
$sudo apt-get install python3.6

$sudo apt-get install python3-pip    #安装pip
$pip3 install --upgrade pip    #更新pip

$sudo apt-get install python3.6-venv    #安装venv

$python3 --version    #查看安装版本