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install_python.py
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executable file
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#!/usr/bin/python
#coding:utf-8
#自动安装Python 2或者pyhton3,此脚本的运行环境为python2
#导入Python的系统编程操作模块
import os
#导入用来处理Python运行时配置以及资源，与前当程序之外的系统环境交互的模块
import sys
#判断当前用户是否是root用户
if os.getuid() == 0:
pass
else:
print 'Not under root mode, please switch user!'
sys.exit(1)
#获取用户输入的python安装版本
version = raw_input('Please input wanted python version(2/3)')
#如果嫌官网下载速度太慢可以指定python3.6.2的链接地址为本人上传资源地址
#根据用户输入的python版本选择源码包下载地址
if version == '2':
url = 'https://www.python.org/ftp/python/2.7.13/Python-2.7.13.tgz'
elif version == '3':
url = 'https://www.python.org/ftp/python/3.6.5/Python-3.6.5.tgz'
else:
print 'Please input given version number(2/3)'
sys.exit(1)
#拼接源码包下载地址并执行下载命令
cmd = 'wget ' + url
res = os.system(cmd)
if res != 0 :
print 'Failed to download python source package, please inspect your network!'
sys.exit(1)
if version == '2':
package_version = 'Python-2.7.13'
else:
package_version = 'Python-3.6.5'
#解压下载的源码包
cmd = 'tar xf ' + package_version + '.tgz'
res = os.system(cmd)
#如果解压失败则删除下载的源码包并且提示用户重新执行脚本
if res != 0:
os.system('rm ' + package_version + '.tgz')
print 'Please reexcute the script to install python'
sys.exit(1)
#为了防止依赖导致安装失败，在此安装部分依赖
cmd = 'yum install -y zlib-devel bzip2-devel openssl-devel ncurses-devel sqlite-devel readline-devel tk-devel gcc make'
res = os.system(cmd)
if version == '2':
package_version = 'Python-2.7.13'
#解压成功则进入解压后的源码目录中依次执行配置、编译、安装过程
cmd = 'cd ' + package_version + ' && ./configure --prefix=/usr/local/python && make && make install'
res = os.system(cmd)
else:
package_version = 'Python-3.6.5'
#解压成功则进入解压后的源码目录中依次执行配置、编译、安装过程
cmd = 'cd ' + package_version + ' && ./configure --prefix=/usr/local/python3 && make && make install' + ' && ln -s /usr/local/python3/bin/python3 /usr/bin/ && ln -s /usr/local/python3/bin/pip3 /usr/bin/'
res = os.system(cmd)
#安装失败则提示用户安装失败了，让用户检查环境依赖
if res != 0:
print 'Failed to install python, please inspect dependencies for python install!'
sys.exit(1)