Ubuntu18.04 安装Python3.8 教程

CentOS 7 看这个
https://blog.csdn.net/fullbug/article/details/121146117

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

更新pip

sudo apt-get install python3-pip

pip3 install --upgrade pip

pip3 -V

下载

wget https://www.python.org/ftp/python/3.8.11/Python-3.8.11.tar.xz
xz -d Python-3.8.11.tar.xz
tar -xvf  Python-3.8.11.tar

编译

./configure prefix=/usr/local/python3

sudo -s 
sudo make altinstall  //不要使用标准的make install，因为它将覆盖默认的系统python3二进制文件

软连接

# 设置新的软链接
ln -s /usr/local/python3/bin/python3.8 /usr/bin/python
ln -s /usr/local/python3/bin/pip3.8 /usr/bin/pip