Python運維-獲取當前操作系統的各種信息

#通過Python的psutil模塊，獲取當前系統的各種信息（比如內存，cpu,磁盤，登錄用戶等），並將信息進行備份
# coding=utf-8
 
# 獲取系統基本信息
import sys
import psutil
import time
import os 
 
#獲取當前時間
time_str =  time.strftime( "%Y-%m-%d", time.localtime( ) )
file_name = "./" + time_str + ".log"
 
if os.path.exists ( file_name ) == False :
   os.mknod( file_name )
   handle = open ( file_name , "w" )
else :
   handle = open ( file_name , "a" )
 
 
#獲取命令行參數的個數
if len( sys.argv ) == 1 :
   print_type = 1
else :
   print_type = 2
 
def isset ( list_arr , name ) :
    if name in list_arr :
       return True
    else :
       return False
 
print_str = "";
 
#獲取系統內存使用情況
if ( print_type == 1 ) or isset( sys.argv,"mem" )  :
 memory_convent = 1024 * 1024
 mem = psutil.virtual_memory()
 print_str +=  " 內存狀態如下:\n" 
 print_str = print_str + "   系統的內存容量為: "+str( mem.total/( memory_convent ) ) + " MB\n" 
 print_str = print_str + "   系統的內存以使用容量為: "+str( mem.used/( memory_convent ) ) + " MB\n" 
 print_str = print_str + "   系統可用的內存容量為: "+str( mem.total/( memory_convent ) - mem.used/( 1024*1024 )) + "MB\n"
 print_str = print_str + "   內存的buffer容量為: "+str( mem.buffers/( memory_convent ) ) + " MB\n" 
 print_str = print_str + "   內存的cache容量為:" +str( mem.cached/( memory_convent ) ) + " MB\n"
 
 
#獲取cpu的相關信息
if ( print_type == 1 ) or isset( sys.argv,"cpu" ) :
 print_str += " CPU狀態如下:\n"
 cpu_status = psutil.cpu_times()
 print_str = print_str + "   user = " + str( cpu_status.user ) + "\n" 
 print_str = print_str + "   nice = " + str( cpu_status.nice ) + "\n"
 print_str = print_str + "   system = " + str( cpu_status.system ) + "\n"
 print_str = print_str + "   idle = " + str ( cpu_status.idle ) + "\n"
 print_str = print_str + "   iowait = " + str ( cpu_status.iowait ) + "\n"
 print_str = print_str + "   irq = " + str( cpu_status.irq ) + "\n"
 print_str = print_str + "   softirq = " + str ( cpu_status.softirq ) + "\n" 
 print_str = print_str + "   steal = " + str ( cpu_status.steal ) + "\n"
 print_str = print_str + "   guest = " + str ( cpu_status.guest ) + "\n"
 
 
#查看硬盤基本信息
if ( print_type == 1 ) or isset ( sys.argv,"disk" ) :
 print_str +=  " 硬盤信息如下:\n" 
 disk_status = psutil.disk_partitions()
 for item in disk_status :
     print_str = print_str + "   "+ str( item ) + "\n"
 
#查看當前登錄的用戶信息
if ( print_type == 1 ) or isset ( sys.argv,"user" ) :
 print_str +=  " 登錄用戶信息如下:\n " 
 user_status = psutil.users()
 for item in  user_status :
     print_str = print_str + "   "+ str( item ) + "\n"
 
print_str += "---------------------------------------------------------------\n"
print ( print_str )
handle.write( print_str )
handle.close()