Python: Python-3.8.6.tgz
CentOS: CentOS Linux release 7.8.2003 (Core)
1. 下载
wget下载
wget https://www.python.org/ftp/python/3.8.6/Python-3.8.6.tgz
2. 安装
解压源码包，进入解压目录
tar -zxvf Python-3.8.6.tgz
cd Python-3.8.6
提前安装依赖
yum install libffi-devel zlib openssl-devel
如果zlib 按出现问题 Multilib version problems found，用下面命令安装
yum install -y zlib --setopt=protected_multilib=false
编译安装，会检查依赖，这里安装到 /usr/local/python3
./configure --prefix=/usr/local/python3
编译安装。
make && make install
稍等片刻，安装完成， pip也安装好了
3. 测试
进入目录，测试下python3 和 pip3
@default ➜ Python-3.8.6 cd /usr/local/python3/bin
@default ➜ bin ./python3
Python 3.8.6 (default, Feb 9 2021, 11:56:52)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-39)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> exit()
@default ➜ bin ./pip3 list
Package Version
---------- -------
pip 20.2.1
setuptools 49.2.1
WARNING: You are using pip version 20.2.1; however, version 21.0.1 is available.
You should consider upgrading via the '/usr/local/python3/bin/python3.8 -m pip install --upgrade pip' command.
提示升级pip，按照提示命令升级。
@default ➜ bin /usr/local/python3/bin/python3.8 -m pip install --upgrade pip
Collecting pip
Downloading pip-21.0.1-py3-none-any.whl (1.5 MB)
|████████████████████████████████| 1.5 MB 1.3 MB/s
Installing collected packages: pip
Attempting uninstall: pip
Found existing installation: pip 20.2.1
Uninstalling pip-20.2.1:
Successfully uninstalled pip-20.2.1
Successfully installed pip-21.0.1
@default ➜ bin ./pip3 list
Package Version
---------- -------
pip 21.0.1
setuptools 49.2.1
配置环境变量，打开系统配置文件
vim /etc/profile
添加环境变量
export PYTHON_HOME=/usr/local/python3
export PATH=$MYSQL_HOME/bin:$PYTHON_HOME/bin:$PATH
使配置生效
source /etc/profile
没问题
