Linux下的Python3安装:
如果本机安装了python2,尽量不要管他,使用python3运行python脚本就好,因为可能有程序依赖目前的python2环境,
比如yum!!!!!
不要动现有的python2环境!
一、安装python3.6
1.安装依赖环境
yum install gcc patch libffi-devel python-devel zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gdbm-devel db4-devel libpcap-devel xz-devel -y
2.下载Python3
# 想下载到那个文件夹下就先进入到那个文件夹下——cd /home/download
wget https://www.python.org/ftp/python/3.6.0/Python-3.6.0.tgz
3.解压文件
# 安装包路径下
tar -xvf Python-3.6.0.tgz
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Python3.6.0.那我这里就是Python-3.6.0.tgz)
4.进入解压后的目录,编译
cd Python-3.6.0
./configure --prefix=/usr/local/python3
5.安装
make
make install
6.建立python3的软链接
# 根目录下
ln -s /usr/local/python3/bin/python3 /usr/bin/python3
7.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
8.检查Python3及pip3是否正常可用:
python3 -V
# Python 3.6.0
pip3 -V
# pip 9.0.1 from /usr/local/python3/lib/python3.6/site-packages (python 3.6)
9.不行的话在创建一下pip3的软链接(我也不清楚这一步有什么用,没遇到过)
# ln -s /usr/local/python3/bin/pip3 /usr/bin/pip3