Centos7升级Python2到Python3

Posted 2021-09-30 wx580ec8c84ec69

安装依赖包

> yum install -y libffi-devel

安装python 3.7.3

# 下载
> wget https://www.python.org/ftp/python/3.7.3/Python-3.7.3.tgz
# 解压
> tar -zxf Python-3.7.3.tgz
# 安装依赖包
> yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gcc  libffi-devel
# 进入python目录
> cd Python-3.7.3
# 编译
> ./configure --prefix=/usr/local/python3.7
#安装
> make && make install

备份Python2版本

>mv /usr/bin/python /usr/bin/python.bak

> ln -s /usr/local/python/bin/python3.7 /usr/bin/python

查看Python版本

> python -V

更改yum配置

• 编辑这两个文件，将文件头的#!/usr/bin/python改为#!/usr/bin/python2

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

原文链接:https://rumenz.com/rumenbiji/centos7-python2-to-python3.html
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