一、安装python3
1. 安装依赖环境
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
2.下载Python3
https://www.python.org/downloads/
wget https://www.python.org/ftp/python/3.8.0/Python-3.8.0.tgz
3.安装python3
建议安装在/usr/local/python3
创建目录:
mkdir -p /usr/local/python3
解压下载好的Python-3.x.x.tgz包(具体包名因你下载的Python具体版本不不同⽽而不不同,如:我下载的是Python3.8.0.那我这里就是Python-3.8.0.tgz)
tar -zxvf Python-3.8.0.tgz
4.进入解压后的目录,编译安装。
cd Python-3.8.0
./configure --prefix=/usr/local/python3
make && make install
这一步执行结束若提示:
ModuleNotFoundError: No module named '_ctypes'
执行
yum install libffi-devel -y
5.建立python3的软链
ln -s /usr/local/python3/bin/python3 /usr/bin/python3
6.将/usr/local/python3/bin加入PATH
打开
vim ~/.bash_profile
在.bash_profile文件末尾添加:
PATH=$PATH:$HOME/bin:/usr/local/python3/bin
export PATH
按ESC,输入:wq回车退出。
执行下面的命令,让修改的文件生效:
source ~/.bash_profile