安装依赖

sudo apt-get update
sudo apt-get install build-essential zlib1g-dev libbz2-1.0 libssl-dev libncurses5-dev libsqlite3-dev libreadline-dev tk-dev libgdbm-dev libdb5.3 libpcap-dev xz-utils libexpat1-dev liblzma-dev openssl libffi-dev libc6-dev

编译过程

• 源码解压

  tar -vxf Python-3.9.tar.xz
  

• 执行配置文件，安装

  ./configure --enable-shared --enable-optimizations --prefix=/usr/local/python3
  make -j10
  sudo make altinstall
  

• 建立软连接

sudo ln -s /usr/local/python3/bin/python3.9 /usr/bin/python39
sudo ln -s /usr/local/python3/bin/pip3.9 /usr/bin/pip3

其他

• python3: error while loading shared libraries: libpython3.9.so.1.0: cannot open shared 将python3.9的绝对路径加入ldconfig中 ```shell vim /etc/ld.so.conf.d/python3.conf

/usr/local/lib ldconfig ```