liunx上升级python2至python3

一.背景介绍

虚拟机的liunx系统CentOS7自带了python2.7.5，为使用方便需要换成最新的版本3.10.4

 

二.安装方法

1.安装升级GCC

yum install -y gcc* openssl openssl-devel ncurses-devel.x86_64  bzip2-devel sqlite-devel  zlib python-devel mysql-devel openldap-devel

2.下载python安装包

wget https://www.python.org/ftp/python/3.10.4/Python-3.10.4.tar.xz

3.解压

tar xvf Python-3.10.4.tar.xz

4.编译安装

cd Python-3.10.4
mkdir -p /usr/local/python3
./configure --prefix=/usr/local/python3
make && make install

5.将老版本python更换

mv /usr/bin/python /usr/bin/python2.7.5

6.更换默认python

ln -s /usr/local/python3/bin/python3 /usr/bin/python
ln -s /usr/local/python3/bin/pip3.10 /usr/bin/pip

7.#修改 yum以及urlgrabber-ext-down中的python

将#!/usr/bin/python改为 #!/usr/bin/python2.7.5

vim /usr/bin/yum
vim /usr/libexec/urlgrabber-ext-down

PS:python3.10.4是默认安装pip的,所以不需要另行安装setuptools和pip.  再次查看python版本已经升级：    

标签：bin,python,devel,3.10,usr,python2,python3,liunx
来源： https://www.cnblogs.com/mrwhite2020/p/16319331.html