cpu_info.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-


import time
from subprocess import check_output


def cpu_percent():
    tmp_total = 0
    tmp_idle = 0
    for i in range(10):
        cpu_data = check_output(['head -n1 /proc/stat'],
                                shell=True).decode().strip()
        (user, nice, system, idle, iowait, irq, softirq, steal, guest,
            guest_nice) = cpu_data.split()[1:]
        diff_idle = int(idle) - tmp_idle
        total_cpu_boot = sum(
            map(int, [user, nice, system, idle, iowait, irq, softirq, steal]))
        diff_total = total_cpu_boot - tmp_total
        diff_usage = 1000 * (diff_total - diff_idle) / (diff_total + 5) / 10
        print(diff_usage)
        tmp_total = total_cpu_boot
        tmp_idle = int(idle)
        time.sleep(1)


cpu_percent()