CentOS 7系统自带了python2,不过可以不用2版本,直接使用python3运行python脚本就可以,但是千万别去动系统自带的python2,因为有程序依赖目前的python2环境,比如yum,动了yum就无法运行了,其他有的程序也可能会受影响。明白了上面的,然后就来安装Python3.6:
安装步骤:
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/
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# wget https://www.python.org/ftp/python/3.6.5/Python-3.6.5.tgz |
3.安装python3
包安装在/usr/local/Python3(具体安装位置看个人喜好)
创建目录:
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# mkdir -p /usr/local/Python3 |
解压下载好的Python-3.6.5.tgz包(具体包名因你下载的Python具体版本,我下载的是Python3.6.5这里就以Python-3.6.5.tgz为例)
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# tar -zxvf Python-3.6.5.tgz |
4.进入解压后的目录,编译安装
如果编译安装过程有报错提示看我的另一个随笔写的解决办法http://www.cnblogs.com/shwee/p/9013851.html
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# cd Python-3.6.5 # ./configure --prefix=/usr/local/Python3 |
然后:make
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# make |
接着:make install
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# make install |
或者两步一起:make && make install
5.安装好了,建立python3的软链
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# ln -s /usr/local/Python3/bin/python3 /usr/bin/python3 |
6.并将/usr/local/Python3/bin加入PATH
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# 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 /P ython3 / bin export PATH |
按ESC,输入:wq,按回车保存退出编辑。
修改完记得执行行下面的命令,让上一步的修改生效:
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# source ~/.bash_profile |
检查Python3及pip3是否正常可用:
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# python3 -V Python 3.6 .5
# pip3 -V pip 9.0 .3 from / usr / local /P ython3 / lib / python3. 6 / site - packages (python 3.6 ) |
作者:洪卫