1、安装依赖环境

yum install gcc -y

yum -y install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel

yum install zlib zlib-devel openssl -y

yum install openssl-devel -y

yum install libffi-devel -y

 

2 python下载地址 https://www.python.org/ftp/python/ 

找到3.9.9版本下载地址

https://www.python.org/ftp/python/3.9.9/Python-3.9.9.tgz

 

3 通过路径进行解压 

tar -zxvf Python-3.9.9.tgz

cd Python-3.9.9

4、创建安装目录

mkdir /usr/local/python3.9/

5、进入解压后的目录，配置安装环境 

./configure --prefix=/usr/local/python3.9/

--prefix 参数是指定安装目录

6、编译并安装

make && make install

现在是安装成功但是老版本还在并未覆盖掉

 

# 把python把链接后名字改为python3 
  mv /usr/bin/python /usr/bin/python_old2
# 再建立新版本python的链接
  ln -s /usr/local/python3/bin/python3  /usr/bin/python 
# 查看
# python -v  

  python升级第二种 Shell脚本

脚本有问题下载这个 yum -y install dos2unix  重新执行一遍

#!/bin/bash
python_version="3.9.12"
echo "安装依赖"
yum -y install \
zlib-devel \
bzip2-devel \
openssl-devel \
ncurses-devel \
sqlite-devel \
readline-devel \
tk-devel \
libffi-devel \
wget \
gcc \
make
 
echo "下载 python"
wget https://www.python.org/ftp/python/3.9.12/Python-$python_version.tgz
 
echo "解压、编译并安装"
tar -zxvf Python-$python_version.tgz && cd Python-$python_version && ./configure prefix=/usr/local/python3 && make && make install
 
echo "创建软件链接 python3 pip3"
ln -s /usr/local/python3/bin/python3.9 /usr/bin/python3 && ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3 && pip3 install --upgrade pip
 
echo "测试"
python3 --version
pip3 --version
 
echo "清除安装包"
rm -rf Python-*
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执行yum 报错File "/usr/bin/yum", line 30 错误解决办法

原因：

yum采用python作为命令解释器，系统自带的为python2.7，我因为要安装appium，所以默认的python软链接了python3.7

解决方法：

修改/usr/bin/yum，把#!/usr/bin/python修改为#!/usr/bin/python2.7

#修改/usr/libexec/urlgrabber-ext-down，把python改为python2.7

vim /usr/libexec/urlgrabber-ext-down

#! /usr/bin/python2.7
#  A very simple external downloader
#  Copyright 2011-2012 Zdenek Pavlas
 

#改完后，重新使用yum安装，就不会报错了

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