虽然可以用各种PPA源安装，但是总是出现各种问题，还是老老实实源码安装配置!

python这玩意各种版本，每次都是烦的一米，这次是用ndoejs express感觉有点毛病，用python来验证下，

所有还得在新服务器上搞搞python环境。

话不多说,前置依赖：先装了再说。

sudo apt-get update; sudo apt-get install make build-essential libssl-dev zlib1g-dev \
libbz2-dev libreadline-dev libsqlite3-dev wget curl llvm \
libncursesw5-dev xz-utils tk-dev libxml2-dev libxmlsec1-dev libffi-dev liblzma-dev

官网下载最新3.x源码

下载

解压.

tar zxvf Python-3.9.6.tgz Python-3.9.6/

建立本地安装目录

#建立目标安装位置
sudo mkdir -p /usr/local/python3.9

#下载解压目录
cd /usr/local/Python-3.9.6

#编译 安装
/usr/local/Python-3.9.6# ./configure --prefix=/usr/local/python3.9 --enable-optimizations
make && make install

耗时大好几分钟...

Processing /tmp/tmp5qmgrw1i/setuptools-56.0.0-py3-none-any.whl
Processing /tmp/tmp5qmgrw1i/pip-21.1.3-py3-none-any.whl
Installing collected packages: setuptools, pip
  WARNING: The scripts pip3 and pip3.9 are installed in '/usr/local/python3.9/bin' which is not on PATH.
  Consider adding this directory to PATH or, if you prefer to suppress this warning, use --no-warn-script-location.
Successfully installed pip-21.1.3 setuptools-56.0.0
WARNING: Running pip as the 'root' user can result in broken permissions and conflicting behaviour with the system package manager. It is recommended to use a virtual environment instead: https://pip.pypa.io/warnings/venv

直接干掉/usr/bin/下的python3,pip3

然后重新指向新安装目录

rm -rf /usr/bin/python3
rm -rf /usr/bin/pip3

ln -s /usr/local/python3.9/bin/python3.9 /usr/bin/python3
ln -s /usr/local/python3.9/bin/pip3.9 /usr/bin/pip


root@cloud-qv94b8-2gzl:/usr/local/python3.9# python3 -V
Python 3.9.6
root@cloud-qv94b8-2gzl:/usr/local/python3.9# pip -V
pip 21.1.3 from /usr/local/python3.9/lib/python3.9/site-packages/pip (python 3.9)
root@cloud-qv94b8-2gzl:/usr/local/python3.9# 

lsb_release 问题

sudo cp  /usr/lib/python3/dist-packages/lsb_release.py /usr/local/python3.9/lib/python3.9/

venv问题

简直像捅了马蜂窝一样，∑( ° △ °|||)︴，以上仅供参考.

哎