#!/usr/bin/python#coding:utf-8'''date:9/2/17 18:03 PMauthor:lockeyemail:lockey@123.comdesc:python自動化安裝用戶指定版本的python環境'''#導入Python的系統編程操作模塊import os#導入用來處理Python運行時配置以及資源，與前當程序之外的系統環境交互的模塊import sys#判斷當前用戶是否是root用戶if os.getuid() == 0:  passelse:  print 'Not under root mode, please switch user!'  sys.exit(1)#獲取用戶輸入的python安裝版本version = raw_input('Please input wanted python version(2.7/3.6)')#如果嫌官網下載速度太慢可以指定python3.6.2的鏈接地址為本人上傳資源地址#根據用戶輸入的python版本選擇源碼包下載地址if version == '2.7':  url = 'https://www.python.org/ftp/python/2.7.13/Python-2.7.13.tgz'elif version == '3.6':  url = 'https://www.python.org/ftp/python/3.6.2/Python-3.6.2.tgz'else:  print 'Please input given version number(2.7/3.5)'  sys.exit(1)#拼接源碼包下載地址并執行下載命令cmd = 'wget ' + urlres = os.system(cmd)if res != 0 :  print 'Failed to download python source package, please inspect your network!'  sys.exit(1)if version == '2.7':  package_version = 'Python-2.7.13'else:  package_version = 'Python-3.6.2'#解壓下載的源碼包cmd = 'tar xf ' + package_version + '.tgz'res = os.system(cmd)#如果解壓失敗則刪除下載的源碼包并且提示用戶重新執行腳本if res != 0:  os.system('rm ' + package_version + '.tgz')  print 'Please reexcute the script to install python'  sys.exit(1)#解壓成功則進入解壓后的源碼目錄中依次執行配置、編譯、安裝過程cmd = 'cd ' + package_version + ' && ./configure --prefix=/usr/local/python && make && make install'res = os.system(cmd)#安裝失敗則提示用戶安裝失敗了，讓用戶檢查環境依賴if res != 0:  print 'Failed to install python, please inspect dependencies for python install!'  sys.exit(1)