- 查看当前python版本
[root@iZwz99sau950q2nhb3pn0aZ ~]# python
Python 2.7.5 (default, Aug 7 2019, 00:51:29)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-39)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
可以看到执行python,默认是2.7
安装依赖包
yum install zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gcc make libffi-devel
编译python源码时,需要一些依赖包,一次安装完毕安装wget
yum install wget
这个包是为了下载python源码用的下载源码包
wget https://www.python.org/ftp/python/3.8.1/Python-3.8.1.tgz解压安装# 解压压缩包
tar -zxvf Python-3.8.1.tgz
进入文件夹
cd Python-3.8.1
配置安装位置
./configure prefix=/usr/local/python3
安装
make && make install
如果最后没提示出错,就代表正确安装了,在/usr/local/目录下就会有python3目录
[root@iZwz99sau950q2nhb3pn0aZ local]# cd /usr/local/
[root@iZwz99sau950q2nhb3pn0aZ local]# ls
aegis bin etc games include lib lib64 libexec python3 sbin share src
- 添加软连接
添加python3的软链接
ln -s /usr/local/python3/bin/python3.8 /usr/bin/python3
添加 pip3 的软链接
ln -s /usr/local/python3/bin/pip3.8 /usr/bin/pip3
这里我没有链接到python上,是因为yum要用到python2才能执行,所以现在输入python的话还是会进入python2.7,输入python3才会进入python3.8
如果执意想要链接到python的话,就得修改一下yum的配置:
vi /usr/bin/yum
把 #! /usr/bin/python 修改为 #! /usr/bin/python2
vi /usr/libexec/urlgrabber-ext-down
把 #! /usr/bin/python 修改为 #! /usr/bin/python2