在Ubuntu里安裝特定版本的Python，常用方法有以下兩種：
sudo add-apt-repository ppa:deadsnakes/ppa。sudo apt update。sudo apt install python3.8。sudo apt install build-essential zlib1g-dev libncurses5-dev libssl-dev libreadline-dev libffi-dev wget。wget https://mirrors.tuna.tsinghua.edu.cn/python/3.10.11/Python-3.10.11.tgz。tar -zxvf Python-3.10.11.tgz。cd Python-3.10.11，./configure --prefix=/usr/local/python3.10.11 --enable-optimizations。make -j(nproc)，sudo make altinstall。
