linux中安装python3
前言
一般linux系统都默认安装了python2,尽量不要管它,使用python3运行python脚本就好,因为linux系统费里有很多程序依赖目前的python2环境,比如ubuntu里的软件中心和yum!!!!!
不要动现有的python2环境!
1. 安装pyhon3.6
- 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-deve
或分别安装依赖环境
yum install openssl-devel -y
yum groupinstall 'Development Tools'
yum install zlib-devel bzip2-devel openssl-devel ncurses-devel
- 下载Python3
进入官网下载(https://www.python.org/downloads/)
或者通过命令方式
这里安装的是python3.6.1版本
wget https://www.python.org/ftp/python/3.6.1/Python-3.6.1.tgz
- 安装python3
我个人习惯安装在/usr/local/python3(具体安装位置看个人喜好)
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Python3.6.1.那我这里就是Python-3.6.1.tgz)
tar -zxvf Python-3.6.1.tgz
- 进入解压后的目录,编译安装。
cd Python-3.6.1
./configure --prefix=/usr/local/python3
make
make
make install
make install 或者 make && make install
- 建立python3的软链
ln -s /usr/local/python3/bin/python3 /usr/bin/python3
- 并将/usr/local/python3/bin加入PATH
# vim ~/.bash_profile
# .bash_profile
# Get the aliases and functions
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi
# User specific environment and startup programs
PATH=$PATH:$HOME/bin:/usr/local/python3/bin
export PATH
按ESC,输入:wq回车退出
修改完记得执行行下面的命令,让上一步的修改生效:
source ~/.bash_profile
检查Python3及pip3是否正常可用:
# python3 -V
Python 3.6.1
# pip3 -V
pip 9.0.1 from /usr/local/python3/lib/python3.6/site-packages (python 3.6)
7.不行的话在创建一下pip3的软链接
ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3
参考
https://www.cnblogs.com/kimyeee/p/7250560.html
https://blog.csdn.net/weixin_42142630/article/details/81089371