关于python:Python脚本监控Linux用户CPU使用率

实现性能：启动后主动运行，每秒打印一次用户CPU使用率，完结脚本时主动计算并打印平均值和最大值。

#!/usr/bin/python# -*-coding: utf-8 -*-import subprocessimport osimport timecmd = "top -bn 1 | grep 'Cpu(s)' | awk -F'[\" \"%]+' '{print $3}'"count = 0total = 0.0max_use = 0.0try:        while True:                cpu_usage = os.popen(cmd).readline().strip()                count = count + 1;                cpu_use = float(cpu_usage)                total = total + cpu_use                max_use = max(max_use, cpu_use)                cpu_tip = "user CPU：" + cpu_usage + "%"                print(cpu_tip)                time.sleep(1)except KeyboardInterrupt:        if count != 0:                per = total / count                print("user CPU per：" + str(per))                print("user CPU max: " + str(max_use))