ubuntu 20.04 源码安装python 3.6.9
安装依赖工具
sudo apt-get install -y gcc make build-essential libssl-dev zlib1g-dev libbz2-dev libreadline-dev libsqlite3-dev wget curl llvm libncurses5-dev libncursesw5-dev xz-utils tk-dev libffi-dev liblzma-dev
下载源码文件压缩包
wget https://www.python.org/ftp/python/3.6.9/Python-3.6.9.tgz
解压源码文件压缩包
xz -d Python-3.6.9.tgz
tar -xvf Python-3.6.9.tar
配置
cd Python-3.6.9
sudo ./configure –enable-optimizations –prefix=/usr/local/bin/python3.6
–prefix=/usr/local/bin/python3.6：编译的时候用来指定程序存放路径。
编译
sudo make
安装
sudo make install
设置软链接
sudo ln -s -f /usr/local/bin/python3.6/bin/python3.6 /usr/bin/python3.6
sudo ln -s -f /usr/local/bin/python3.6/bin/pip3.6 /usr/bin/pip3.6
apt方式安装 （不能指定小版本）
python3 –version
添加python软件源
sudo apt update
sudo apt install software-properties-common
sudo add-apt-repository ppa:deadsnakes/ppa
sudo apt update
安装3.6版本并查看
sudo apt install python3.6
python3.6 -V
