用Python語言寫出來的腳本，去安裝python，先有蛋后有雞嗎

大佬，幫你加了個(gè)縮進(jìn)

#/bin/python
#coding=utf8

import?os,sys

def?choiceversion(version):
????if?version?==?'2.7':
????????url?=?"https://www.python.org/ftp/python/2.7.16/Python-2.7.16.tgz"
????????download(url)
????elif?version?==?'3.5':
????????url?=?"https://www.python.org/ftp/python/2.7.16/Python-3.5.2.tgz"
????????download(url)
????else:
????????print("輸入的版本號(hào)有誤，請(qǐng)輸入'2.7'或者'3.5'")
????????install(version)

def?download(url):
????try:
????????cmd?=?"wget?"+url
????????os.system(cmd)
????except:
????????print("下載源碼包失敗，請(qǐng)檢查當(dāng)前網(wǎng)絡(luò)")
????????sys.exit(1)

def?install(version):
????if?version?==?2.7:
????????package_name?==?'Python-2.7.16'
????else:
????????package_name?==?'Python-3.5.2'
????try:
????????cmd?=?"tar?-xf?"+"package_name"+".tgz"
????????os.system(cmd)
????except:
????????print("解壓源碼包失敗，請(qǐng)重新運(yùn)行腳本下載源碼包")
????????os.system("rm?-rf"+package_name+".tgz")
????????sys.exit(1)
????path?=?os.getcwd()
????try:
????????dependency?=?"yum?groupinstall?-y?'Devolopment?Tools'?&&?yum?install?-y?zlib-devel?openssl-devel?readline-devel?libffi-devel"
????????os.system(dependency)
????????cmd?=?"cd?"+path+"/"+package_name+"?&&?./configure?&&?make?&&?make?install?"
????????os.system(cmd)
????except:
????????print("Python源碼安裝失敗，請(qǐng)檢查是否缺少依賴庫")
????????sys.exit(1)
????environmentalVariable?=?"echo?'PATH=$PATH:/usr/local/bin'?>>?/etc/profile"
????os.system(environmentalVariable)
????source?=?"source?/detc/profile"
????os.system(source)

if?__name__?==?"__main__":
????if?os.getuid()?==?0:
????????pass
????else:
????????print("當(dāng)前用戶不是root，請(qǐng)使用root用戶執(zhí)行腳本")
????????sys.exit(1)

version_float?=?input("請(qǐng)輸入你想安裝的Python版本，'2.7'或者'3.7'")

version_string?=?str(version_float)

choiceversion(version_string)