Ubuntu18.04 python3环境安装

源码编译安装

1.到官网下载需要的版本，下载地址：https://www.python.org/ftp/python/

wget https://www.python.org/ftp/python/3.9.9/Python-3.9.9.tgz

2.源码解压

tar -zxvf Python-3.9.9.tgz

3.依赖安装

apt install build-essential zlib1g-dev libncurses5-dev libgdbm-dev libnss3-dev libssl-dev libreadline-dev libffi-dev wget

4.编译安装

cd Python-3.9.9
./configure  --prefix=/usr/local/pyhton3.9
make & make install

5.创建系统命令(软连接)

sudo ln -s /usr/local/pyhton3.9/bin/pyhton3.9 /usr/bin/python