问题描述

系统可能携带的是python3.6，而自动化开发基线是python3.7就会导致部分包无法使用等问题

升级python3.7

1. 查看当前系统python版本

   ls -al /usr/bin |grep python
   

   输出：

   [uos@localhost ~]$ ls -al /usr/bin |grep python
   lrwxrwxrwx  1 root root          31 11月 30  2021 python3 -> /usr/libexec/platform-python3.6
   lrwxrwxrwx  1 root root          32 11月 30  2021 python3.6m -> /usr/libexec/platform-python3.6m
   lrwxrwxrwx  1 root root          25  2月 20 09:54 python3.bak -> /etc/alternatives/python3
   lrwxrwxrwx  1 root root          24  2月 20 09:54 unversioned-python -> /etc/alternatives/python
   

   基本说明python3版本是python3.6了

2. 下载目标版本python3.7 tar包

   官方地址找到你要升级的版本点击download ,鼠标往下拉，找到 Files:

   Files

   Version	Operating System	Description	MD5 Sum	File Size	GPG
   Gzipped source tarball	Source release		2ee10f25e3d1b14215d56c3882486fcf	22973527	SIG
   XZ compressed source tarball	Source release		93df27aec0cd18d6d42173e601ffbbfd	17108364	SIG
   macOS 64-bit/32-bit installer	macOS	for Mac OS X 10.6 and later	5a95572715e0d600de28d6232c656954	34479513	SIG
   macOS 64-bit installer	macOS	for OS X 10.9 and later	4ca0e30f48be690bfe80111daee9509a	27839889	SIG
   Windows help file	Windows		7740b11d249bca16364f4a45b40c5676	8090273	SIG
   Windows x86-64 embeddable zip file	Windows	for AMD64/EM64T/x64	854ac011983b4c799379a3baa3a040ec	7018568	SIG
   Windows x86-64 executable installer	Windows	for AMD64/EM64T/x64	a2b79563476e9aa47f11899a53349383	26190920	SIG
   Windows x86-64 web-based installer	Windows	for AMD64/EM64T/x64	047d19d2569c963b8253a9b2e52395ef	1362888	SIG
   Windows x86 embeddable zip file	Windows		70df01e7b0c1b7042aabb5a3c1e2fbd5	6526486	SIG
   Windows x86 executable installer	Windows		ebf1644cdc1eeeebacc92afa949cfc01	25424128	SIG
   Windows x86 web-based installer	Windows		d3944e218a45d982f0abcd93b151273a	1324632	SIG

   选择第一个 Gzipped source tarball 点击下载到本机

3. 解压tar包(我这里下载了高版本3.9)

   [uos@localhost Desktop]$ tar -zxvf Python-3.9.6.tgz 
   

   在当前目录会出现一个Python-3.9.6目录,进入该目录

   [uos@localhost Desktop]$ cd Python-3.9.6/
   

   在当前目录执行：

   [uos@localhost Python-3.9.6]$ ./configure 
   

4. 安装一些编译依赖,直接切换到root用户执行

   yum -y groupinstall "Development tools"
   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 libffi-devel -y
   

5. 开始编译：

   [uos@localhost Python-3.9.6]$ make
   

6. 开始安装

   [uos@localhost Python-3.9.6]$ make install
   

7. 这个时候直接执行python3,可能就已经是python3.9版本了（目前我的就是），如果还是python3.6继续第8步

8. 修改/usr/bin/python3 指向的软连接到第三步解压出来的python

   先删除或者重命名原来的/usr/bin/python3

   [root@localhost Python-3.9.6]# mv /usr/bin/python3 /usr/bin/python3.bak
   

   新建/usr/bin/python3软连接

   [root@localhost Python-3.9.6]# ln -s /home/uos/Desktop/Python-3.9.6/python /usr/bin/python3
   
   

   查看一下：

   [root@localhost bin]# ls -al |grep python
   lrwxrwxrwx  1 root root          37  2月 20 18:36 python3 -> /home/uos/Desktop/Python-3.9.6/python
   lrwxrwxrwx  1 root root          31 11月 30  2021 python3.6 -> /usr/libexec/platform-python3.6
   lrwxrwxrwx  1 root root          32 11月 30  2021 python3.6m -> /usr/libexec/platform-python3.6m
   lrwxrwxrwx  1 root root          25  2月 20 09:54 python3.bak -> /etc/alternatives/python3
   lrwxrwxrwx  1 root root          29  2月 20 18:04 python3.bak1 -> /home/uos/Python-3.9.6/python
   lrwxrwxrwx  1 root root          24  2月 20 09:54 unversioned-python -> /etc/alternatives/python
   

   执行一下python3

   [root@localhost bin]# python3
   Python 3.9.6 (default, Feb 20 2023, 17:52:09) 
   [GCC 8.5.0 20210514 (UnionTech 8.5.0-10.0.3)] on linux
   Type "help", "copyright", "credits" or "license" for more information.
   >>>