python和bash统计CPU利用率，pythonbash利用率,#!/usr/bin/p

python和bash统计CPU利用率，pythonbash利用率,#!/usr/bin/p

#!/usr/bin/python# -*- coding:utf8 -*-__author__ = 'chenwx'def cpu_rate():    import time    def cpu_r():        f = open("/proc/stat","r")        for f_line in f:            break        f.close()        f_line = f_line.split(" ")        f_line_a=[]        for i in f_line:            if i.isdigit():                i=int(i)                f_line_a.append(i)        total = sum(f_line_a)        idle = f_line_a[3]        return total,idle    total_a,idle_a=cpu_r()    time.sleep(2)    total_b,idle_b=cpu_r()    sys_idle = idle_b - idle_a    sys_total = total_b - total_a    sys_us = sys_total - sys_idle    cpu_a = (float(sys_us)/sys_total)*100    return cpu_a# print cpu_rate()