安装Python3.8

一、安装环境

• Ubuntu2004
• Python2.7

目标是将python版本从 2.7 更新到3.8

二、安装步骤

2.1 下载python3.8安装包

wget https://www.python.org/ftp/python/3.8.0/Python-3.8.0.tar.xz

2.2 安装

依次执行如下步骤：

tar Jxf Python-3.8.0.tar.xz

cd Python-3.8.0

./configure prefix=/usr/local/python3

make

sudo make install

2.3 环境切换

查看目前python环境：

将python环境切换成刚刚安装的3.8

sudo rm /usr/bin/python3
sudo ln -s /usr/local/python3/bin/python3.8 /usr/bin/python3

至此安装成功！

如果出现以下错误：

zipimport.ZipImportError: can't decompress data; zlib not available

make: *** [install] Error 1

可通过以下命令解决

sudo apt-get install -y make build-essential libssl-dev zlib1g-dev libbz2-dev  libreadline-dev libsqlite3-dev wget curl llvm libncurses5-dev libncursesw5-dev   xz-utils tk-dev